The first three months of your baby's life are full of wonder, growth, and unforgettable moments. Your baby changes every single day, and so do their sleep habits.
But what is behind these changes, and how can you help your baby sleep better?
This article walks you through the sleep patterns of your 3-month-old and gives you tips for improving your little one's sleep.
Ready?
The Magical Development of the Third Month
Hi! I'm Sarah, a baby sleep consultant and mom of seven. Through my many years of working with families, and with my own children, I know exactly what joys and challenges baby sleep can bring.
At three months, your baby is going through some remarkable developmental stages. Many parents are amazed by the rapid physical and mental changes that happen during this time. This stage is often seen as an important milestone in a baby's development.
Why is the third month so special?
During these weeks, many babies begin to take in their surroundings much more intensely. They smile more, interact with their family, and show the first signs of curiosity. Their motor skills are getting stronger, too, from purposeful grasping to turning their head toward sounds or voices.
This rapid development, both mental and physical, also affects sleep. As your baby grows and gains new skills, their energy needs and their need for sleep change as well.
Sleep Patterns and How They Change
During your baby's first weeks, it may seem as if there is no real sleep pattern at all. Newborns sleep and wake at all kinds of times of day. But by the third month, many parents notice clear changes in their baby's sleep habits.
Babies gradually develop a biological rhythm (known as the circadian rhythm). As a result, they tend to sleep longer at night and less during the day. (Every baby is different, though. Some have longer stretches of night sleep early on, while others need more time to adjust.)
Here are some important habits and changes you might notice:
Deeper sleep phases: Your baby will wake less easily from noises or movement.
Longer stretches of night sleep: It is not unusual for some babies to sleep up to 5 to 6 hours at a time at night.
Changing naps: While newborns often take many short naps throughout the day, at 3 months these naps may become longer and less frequent.
Sleep Needs at 3 Months: The Essentials at a Glance
Here are the five most important questions and answers about how much sleep 3-month-old babies need.
(Keep in mind that the numbers below are averages, and it is completely normal if your baby sleeps more or less than average.)
1. How Much Sleep Does a 3-Month-Old Need?
On average, babies this age need about 14 to 16 hours of sleep a day.
2. Can a 3-Month-Old Sleep Through the Night?
At 3 months, a baby can (!) sleep 5 to 6 hours (or even longer) at a stretch at night. That said, it is completely normal for most babies to wake once or twice a night, or even more often.
3. How Long Are the Wake Windows of a 3-Month-Old?
Most 3-month-olds stay awake for 1 to 2 hours during the day before they get tired again and need a nap.
4. How Many Naps Does a 3-Month-Old Take?
It varies, but most babies this age take about 3 to 4 naps a day.
The length of those naps can vary a lot, though. Some babies take several short 30-minute naps, while others take one or two longer naps of one to two hours.
5. What Time Should a 3-Month-Old Go to Bed?
The ideal bedtime for a 3-month-old is between 7:00 and 8:00 PM. Of course, it can vary quite a bit. Some babies are ready as early as 6:00 PM, while others don't settle in for their night sleep until around 9:00 PM.
A Typical Daily Routine for a 3-Month-Old (Example)
Many parents wonder what a typical day with a 3-month-old might look like.
Here is an example:
6:00 AM: Wake up and feed
7:30 AM: Short nap (about 30 minutes)
8:00 AM: Awake time: play, tummy time
9:00 AM: Nap (1 to 1.5 hours)
10:30 AM: Wake up and feed
12:00 PM: Midday nap (1 to 2 hours)
2:00 PM: Wake up and feed
3:30 PM: Afternoon nap (1 hour)
4:30 PM: Awake time: go for a walk, sing songs
6:00 PM: Short evening nap (30 minutes)
7:00 PM: Wake up, feed, and bedtime routine
8:00 PM: Bedtime
Midnight & 3:00 AM: Possible night feeds
This daily routine is only meant as a guideline and can be adjusted to fit your baby's needs.
Sleep Regression at 3 Months
One term you may have heard already, and one that sometimes sets off alarm bells for parents, is "sleep regression."
What are sleep regressions?
In short, it is a phase in which a baby who was sleeping well suddenly wakes up more often or has trouble falling asleep.
Several reasons play a role:
Phases of rapid growth and development: Babies often wake more often when they are going through a developmental leap or teething. At 3 to 4 months, your little one's brain is maturing, and they are learning quite a few new skills.
Changing sleep cycles: From around 4 months, your baby's sleep cycles start to behave more like an adult's, with more light sleep. This can lead to frequent waking.
Sleep regressions are also especially relevant for 3-month-olds because the 4-month sleep regression is just around the corner, and it can already show its first signs from 3 months on.
If your baby is going through a sleep regression, try to respond with patience and empathy. On the whole, it is a positive phase, because it means your child is developing.
Creating the Perfect Sleep Nest
A soothing, safe place to sleep is essential for your baby's restful sleep. The sleep environment plays a key role in how well and how safely your baby sleeps.
Bedside bassinet or cradle: In the first months, a bedside bassinet or a cradle is often the preferred choice for many parents. It offers closeness and security without having the baby in your own bed.
Calm surroundings: Soft music or white noise can help create a soothing atmosphere. This can be especially helpful when your baby wakes during the night.
Cool and comfortable: The ideal room temperature for a baby's bedroom is between 61 and 68°F. Check regularly whether your baby is too warm or too cold by feeling the back of their neck.
Safe sleep: Make sure there are no loose items like pillows or stuffed animals in the sleep space. The crib should have a firm mattress, and the fitted sheet should be pulled tight.
Day by Day: Routines and Rituals
Daily routines and rituals can work wonders when it comes to helping your baby tell day from night and develop a steady sleep-wake cycle.
Here are some reasons why establishing routines is so important:
Predictability: Regular routines give babies a sense of security and help them know what comes next.
Linking sleep cues: Rituals like reading a story or singing a lullaby signal to your baby that it is time to sleep.
Quality bonding: Bedtime can be a special time of closeness and connection between parents and baby.
To get a routine started, keep these tips in mind:
Be consistent: Try to start the routine at the same time every day, even if the steps vary now and then.
Simple activities: A warm bath, a gentle massage, or soft singing can calm your baby and get them ready for sleep.
Encourage darkness: Dim the lights before bedtime to signal to your baby that it is time to sleep. (It also helps your baby's body prepare for sleep more easily.)
The Secret of Naps
The secret to restful night sleep may lie in the naps your baby takes during the day. Daytime sleep has a direct effect on the quality and length of sleep at night.
Sleep begets sleep: It may seem counterintuitive, but a well-rested baby actually sleeps better at night. Overtired babies, on the other hand, often have a very hard time falling asleep and staying asleep.
Recognizing sleep cues: Watch for signs of tiredness like rubbing their eyes, yawning, or fussiness. A nap at the right moment can work wonders!
Not too long: A nap that runs too long in the late afternoon can affect night sleep. Try to keep the last nap before bedtime to about 30 minutes.
Regular naps: Flexibility matters, but a certain regularity with naps can help stabilize your baby's circadian rhythm.
Sleep at 3 months can sometimes be a challenge. But it is also a time of great development and change.
By understanding your baby's needs and habits and creating a supportive sleep environment, you can help them develop healthier sleep habits.
Warmly,
Sarah
Frequently Asked Questions
1. How Many Hours Should My Baby Sleep in the Third Month?
On average, a 3-month-old sleeps between 14 and 16 hours a day, including night sleep and naps. Many babies begin to sleep longer at night and settle into their daytime naps, which contributes to this changing pattern.
2. Why Is My Baby Suddenly Waking Up More Often?
Several factors can lead to frequent night waking: growth spurts, developmental leaps, or an approaching sleep regression. It is important to be patient and watch for other signs or changes in your baby's behavior.
3. Is It Normal for My Baby to Sleep More During the Day Than at Night?
In the first weeks of life, yes. But from the third month on, many babies begin to shift and sleep more at night. This is part of the natural developmental process in which your baby learns to tell day from night.
4. How Can I Help My Baby Sleep Through the Night?
Introduce a consistent bedtime routine. Watch for sleepy cues (and do your best to avoid overtiredness). And create a calm sleep environment. All of this can help encourage longer stretches of sleep at night.
5. Do I Have to Put My Baby to Sleep on a Set Schedule?
A schedule is not a must, but it can be helpful. Pay more attention to your baby's sleep cues and try to build a routine around them.
6. What Are the Best Sleep Positions for a 3-Month-Old?
Experts recommend putting babies to sleep on their back to lower the risk of sudden infant death syndrome (SIDS). This position offers the safest environment for your baby, especially in the first months of life.
7. Should I Watch for Sleep Cues or Follow a Set Schedule?
It is best to combine both. Watch for your baby's signs of tiredness, like rubbing their eyes or fussing, and try to fit them into a rough daily routine. But stay flexible and adapt the plan to your child's needs.
8. How Can I Make the Transition From Naps to Night Sleep Easier?
Create a calm and consistent bedtime routine, for example a warm bath followed by a nursing or feeding session. Dark rooms and gentle lullabies can also help signal to your baby that it is time to wind down.
9. What Role Do Feedings Play in My Baby's Sleep?
Feedings can have a big influence on sleep. A baby with a full tummy often sleeps better. But if there are digestive issues, for example from colic, that can disrupt sleep.
10. Are There Things That Can Disrupt My Baby's Sleep?
Yes, many factors can affect sleep: overstimulation, a room that is too cold or too warm, loud noises, hunger, or discomfort like teething or illness.
11. When Does It Make Sense to Start Sleep Coaching With My Baby?
Sleep coaching generally means helping your baby learn to fall asleep and stay asleep more independently. Many babies only develop this ability at around 6 months, though.
Even so, there is a lot you can already do before then, such as gently practicing falling asleep more independently, a calm bedtime routine, and watching for sleepy cues.
With love, Sarah
About the author
Sarah Mann
Mom of seven. Certified Sensitive Sleep Consultant of the ISSC Australia. Founder of Land of Little Dreamers. Writing about attachment-friendly baby sleep for ten years, because it took her years to find her own way.
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