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Article: Why My 3 Month Old Sleeping a Lot?

Why My 3 Month Old Sleeping a Lot?

Why My 3 Month Old Sleeping a Lot?

When your baby is just 3 months old, it's normal for parents to notice that their little one sleeps a lot. At this age, babies usually need to rest 14 to 17 hours in 24 hours. This may seem like a lot, but it's vital for their growth and development.

Each baby's sleep patterns can vary greatly, and since their bodies and brains are growing rapidly, frequent naps are common. If your 3-month-old is sleeping more than expected, it's usually nothing to worry about, but understanding his or her sleep needs can help put your mind at ease.

Why 3-month-old sleeping a lot?

Here are some reasons why your 3-month-old baby is sleeping more:

Growth Spurt

During growth spurts, your baby's body needs more rest to support rapid physical and developmental changes. 3-month-old babies often experience growth spurts and sleep more as their bodies and brains develop.

Brain Development

During the first few months, the brain undergoes important growth and developmental processes. Sleep is vital to this process, allowing your baby's brain to form new connections, process information, and develop cognitive skills.

Establishing Sleep Patterns

At about 3 months of age, babies begin to develop more regular sleep patterns. Their internal clock or circadian rhythm begins to mature, resulting in longer and more consistent sleep.

Feeding schedule

A well-fed baby sleeps better. At this stage, the feeding schedule affects sleep; the longer the time between feedings, the longer the sleep period. Proper nutrition contributes to overall health and rest.

Physical Activity

Although 3-month-old babies' activities may seem minimal, the physical exertion of kicking, grasping, and other movements can wear your baby out. As your baby's body recovers and gets stronger, increased physical activity can increase sleep time.

Health and comfort

If your baby is healthy and comfortable, they are likely to sleep well. Regular pediatric checkups can ensure that your baby is growing as expected and help parents address any health issues that may be interfering with sleep.

Good sleep environment

Most babies have an ideal sleep environment, they sleep with sleep sacks in a silent and dark room, which can help them sleep better and longer.

Knowing these reasons makes parents more comfortable when their 3-month-old baby is sleeping a lot because they know it's a normal part of their baby's development.

Can a 3-month-old sleep too much?

Yes, 3-month-old babies sometimes sleep too much, but it's not always something to worry about. Generally speaking, if your baby is healthy, growing well, and meeting developmental milestones, it's normal for him or her to sleep for longer periods of time. However, in some cases, excessive sleep may need to be a cause for concern.

If your baby consistently sleeps more than 17 hours a day and seems drowsy or is difficult to wake up from a feed, this may indicate an underlying problem.

Health problems such as infections or jaundice may cause your baby to be more sleepy.

When do you need to consult a pediatrician?

  • Didn't breastfeed well.
  • Didn't gain weight as expected.
  • Didn't interact well.

Parents should keep track of their baby's sleep patterns, feeding, and overall behavior to ensure they are healthy and thriving. If there are any issues, it's best to seek medical advice to rule out any potential problems.

An ideal 3-month-old sleep schedule

Below is a sample of the ideal sleep schedule for a 3-month-old baby for your reference:


7:00 a.m. Wake up and feed

8:30 am - 10:00 am Morning nap


10:00 a.m. Wake up and feed

11:30 a.m. - 1:00 p.m. Naps


1:00 p.m. Wake up and breastfeeding

2:30 p.m. - 4:00 p.m. Afternoon nap


4:00 p.m. Wake up and breastfeeding

5:30 p.m. - 6:00 p.m. Take a nap


6:00 pm Wake up and breastfeeding

7:30 pm Start bedtime routine

8:00 pm - 7:00 am Night sleep, 1-2 feedings as needed

On this schedule, your baby will sleep approximately 14-17 hours with regular feeding and wakefulness times to support your baby's growth and development. Of course, every baby is unique, so parents may need to adjust the schedule to meet their baby's specific needs.

Does a 3-month-old have the sleep regression?

Yes, sleep regression can occur in babies as young as 3 months old, although it is more common around 4 months. Sleep regression is when a baby who used to be a good sleeper starts waking up more often or has trouble falling asleep. There may be several reasons why this happens:

Developmental changes

Around this age, your baby's brain is undergoing significant development, which can disrupt their sleep patterns. They begin to become more aware of their surroundings, which may make it harder for them to settle down and fall asleep.

Changes in sleep cycles

As your baby grows, their sleep cycle will become more adult-like, with distinct stages of light and deep sleep. This change can cause them to wake up more easily between sleep cycles.

Physical development

Growth spurts can lead to increased hunger, which can lead to more waking up at night to feed. Babies may also be learning new physical skills, such as rolling over, which can disrupt their sleep.

Separation anxiety

As babies become more aware of their parents, they may develop separation anxiety, making it difficult to fall or stay asleep if they wake up without seeing their parents.

Understanding that sleep regression is a normal part of development can help parents cope with this challenging time. While it can be tough, it is usually temporary, and maintaining a consistent bedtime routine can help ease the transition.

How to sleep train a 3-month-old?

Here are some strategies for sleep training your 3-month-old:

Establish a bedtime routine

Establishing a consistent bedtime routine helps signal to your baby that it's time to sleep. This can include activities such as taking a warm bath, reading a book, or singing a lullaby. Doing the same things in the same order each night can help your baby relax and get ready for sleep.

Create a sleep-friendly environment

Make sure your baby's sleep environment is conducive to rest. This means keeping the room dark, cool, and quiet. Using a white noise machine can help mask household noises that could wake your baby.

Keep a consistent sleep schedule

Try to maintain a regular sleep schedule, going to bed and getting up at the same time every day. Being consistent helps regulate your baby's internal clock and improve sleep patterns.

Putting your baby to sleep drowsy but awake

Putting your baby down when they are drowsy but still awake can help them learn to fall asleep on their own. This can be a key part of sleep training as it teaches your baby to self-soothe rather than relying on rocking or feeding to fall asleep.

Limiting naps

While naps are important, try to make sure that your baby doesn't nap too much during the day, as this can interfere with nighttime sleep. There should be a balance between waking and sleeping hours during the day.

Respond appropriately to night wakings

When your baby wakes up during the night, try to soothe them without picking them up immediately. Patting, shushing, or offering a pacifier can help them sleep peacefully. Avoid turning on bright lights or overstimulating them.

Maintain patience and consistency

Sleep training takes time and consistency. It is important to stick to the program and remain patient. Gradual progress is normal and there may be setbacks, but persistence will gradually help your baby learn to sleep better.

Parents should remember that every baby is different and what works for one baby may not work for another. If sleep training is not working, or if there are concerns about your baby's health, consulting your pediatrician can provide more guidance.


In summary, it is normal for 3-month-olds to sleep a lot, usually 14 to 17 hours a day. Lots of sleep helps their rapid growth and development, including physical development, brain development, and establishing regular sleep patterns.

While this is usually not a cause for concern, parents should still monitor their baby's overall health, feeding, and behavior. Consulting with a pediatrician can provide reassurance and guidance if there are any signs of sleepiness, feeding difficulties, or developmental issues. Understanding and respecting your baby's sleep needs can help parents ensure their little one grows up healthy and strong.

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Yujia Shi

An expert in sleep sack design, is a valued contributor to Kaiya Baby's blog. With a strong background in baby sleep bags and maternal care, she is highly regarded for her professionalism. Yujia Shi prioritizes baby comfort and safety in her designs, using high-quality materials. Her insightful articles on sleep bags have been featured in reputable publications and have gained a significant readership. Trust Yujia Shi to help you create a comfortable and safe sleep environment for your baby, backed by her proven track record in the industry.

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