Newborn Sleep Patterns: What to Expect in the third Month

August 22, 2025
11:21 am

Newborn Sleep Patterns: What to Expect in the third Month

By the third month, your baby’s sleep begins to settle into gentle rhythms with longer nighttime stretches and more predictable naps. Learn what to expect, common challenges, and tips to support healthy sleep habits during this stage of growth.

By motherly

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The first few months with your baby are filled with joy, learning, and sometimes exhaustion. By the time your little one reaches the third month, many parents notice small but important changes in their baby’s sleep. The unpredictable days and nights of the newborn stage start to settle into gentler rhythms. Understanding what’s normal in the third month, and how you can support healthy sleep habits, will help you feel more confident and prepared during this stage of parenthood.

How Much Sleep Does a 3-Month-Old Baby Need?

At three months old, babies typically need 14–17 hours of sleep in a 24-hour period. This is divided between nighttime sleep and daytime naps.

Night Sleep: About 8–9 hours (not always in one stretch).
Daytime Naps: Around 4–5 hours, usually spread across 3–4 naps.

Some babies may need slightly more or less, and that’s completely normal. The key is to watch your baby’s cues rather than the clock.

What Changes Around the Third Month?

During the third month, your baby’s sleep matures as their body and brain continue to grow. Here’s what you might notice:

Longer Nighttime Sleep

Many babies begin sleeping for 4–6 hour stretches at night, giving parents a chance for more rest.

More Predictable Nap Times

Daytime sleep becomes more structured, with shorter but more regular naps.

Developing Circadian Rhythm

Babies start recognizing day vs. night, meaning longer sleep at night and more wakefulness during the day.

Active Sleep Cycles

You may see your baby twitch, smile, or make noises during sleep. This is part of the REM (active sleep) cycle, which is essential for brain development.

Tips to Encourage Healthy Sleep in the Third Month

While every baby is unique, creating gentle routines can support smoother sleep patterns.

Create a Bedtime Routine: Simple steps like a warm bath, dimming the lights, gentle rocking, or a lullaby signal that it’s time to wind down.
Encourage Daytime Activity: More play, tummy time, and interaction during the day help babies sleep better at night.
Feed Before Bedtime: A full tummy often leads to longer nighttime stretches.
Practice Safe Sleep: Place your baby on their back, in a firm crib, with no pillows or loose bedding.
Respond with Comfort: At this stage, babies still need comfort at night. Gentle reassurance helps them feel secure.

Common Challenges Parents Face

Even with improvements, the third month can still come with challenges. Here are a few you may encounter:

Frequent Night Wakings: Some babies still wake every 2–3 hours for feeds.
Growth Spurts: Your baby may suddenly sleep less and feed more during these periods.
Sleep Regressions: Occasional disruptions in sleep are normal as your baby develops new skills.
Parental Exhaustion: Caring for a 3-month-old can still be demanding. Remember to rest whenever you can.

When to Be Concerned About Sleep

Most variations in sleep are normal, but you may want to consult your pediatrician if:

Your baby sleeps significantly more or less than the average range.
Your baby has trouble breathing, snoring, or prolonged restlessness during sleep.
Your baby is consistently difficult to wake or seems excessively drowsy.

Key Takeaways

A 3-month-old typically sleeps 14–17 hours per day.
Sleep begins to consolidate with longer nighttime stretches and more predictable naps.
Establishing gentle routines can support better sleep habits.
Every baby develops differently—look for patterns, not perfection.
Occasional challenges like regressions or night wakings are normal.

A Gentle Note for Parents

At three months, you and your baby are still learning together. Sleep may not be perfect, but you’re beginning to see glimmers of routine. Celebrate the little wins—an extra hour of sleep, a predictable nap, or simply the joy of watching your baby grow.

Remember, you’re not alone. With patience, love, and the right support, you’ll both find your rhythm.

At Motherly, we understand how important rest and reassurance are for new parents. Our postnatal care experts and infant specialists are here to guide you with compassion, helping you and your baby thrive together.