How Much Should a Newborn Sleep? A Guide by Age and Week

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It is 1am, you have lost count of how many times your newborn has woken up, and you are starting to wonder if something is wrong. It is not. Newborn sleep looks chaotic because it is supposed to look chaotic, and once you know what is actually normal at each stage, the chaos gets a little less frightening. Newborn sleep does not work like a toddler’s or an adult’s. Your baby’s body has not yet built a circadian rhythm, the internal clock that eventually tells us to sleep at night and stay awake during the day. That rhythm starts forming around 2 months and is not fully online until closer to 4 to 6 months. Until then, sleep comes in short, unpredictable bursts around the clock, driven mostly by hunger rather than time of day.

This matters right now because so much new-parent anxiety comes from comparing your baby to a chart that was never written for newborns in the first place. Knowing the real ranges, broken down by week and by month, lets you stop guessing and start noticing what your specific baby actually needs. A good outcome here is not a baby who sleeps through the night. It is a parent who can look at a rough night and know whether it is typical newborn behavior or something worth calling the pediatrician about.

Total Sleep Needs By Age

Most newborns sleep between 14 and 17 hours across a full 24-hour day, though some healthy babies need closer to 18, and others do fine on a bit less. That sleep almost never comes in one long stretch. It is split across 4 to 6 naps plus nighttime sleep, with individual stretches typically lasting only 1 to 4 hours before your baby wakes to eat.

The reason for those short stretches is mostly logistical. A newborn’s stomach is tiny, so breastfed babies usually wake to feed every 2 to 3 hours and formula fed babies every 3 to 4 hours. Waking up that often is not a sign that something has gone wrong with sleep. It is a sign that digestion and hunger are working the way they are supposed to at this age.

Week By Week: What To Expect

Weeks 1 and 2. Your baby is likely sleeping 16 to 18 hours a day, split almost evenly between day and night. Wake windows, the stretch of time your baby can comfortably stay alert between naps, run about 35 to 60 minutes. There is no daytime versus nighttime distinction yet, because that distinction has not developed.

Weeks 3 and 4. Total sleep stays similar, generally 15 to 17 hours, but you may notice your baby staying awake a little longer between naps and fussing more in the evening. This is often the period parents describe as the witching hour, a stretch of fussiness, usually in the late afternoon or evening, that tends to ease by 8 to 12 weeks.

Weeks 5 through 8. Sleep starts to consolidate slightly. Total sleep drifts toward 14 to 16 hours, and you may start to see the beginnings of a longer nighttime stretch, sometimes 3 to 5 hours, though this varies enormously from baby to baby.

Weeks 9 through 12. Many babies begin showing early signs of a day-night rhythm here, sleeping somewhat more at night and staying alert for longer stretches during the day. Total sleep is usually still in the 14 to 16 hour range. Breastfed newborns continue to wake roughly every 2 to 3 hours and formula fed babies roughly every 3 to 4 hours during this period.

The table below gives you the quick-reference version.

Age	Total Sleep (24 Hours)	Longest Stretch	Wake Windows
Weeks 1 to 2	16 to 18 hours	2 to 3 hours	35 to 60 minutes
Weeks 3 to 4	15 to 17 hours	2 to 4 hours	40 to 70 minutes
Weeks 5 to 8	14 to 16 hours	3 to 5 hours	45 to 75 minutes
Weeks 9 to 12	14 to 16 hours	4 to 6 hours	60 to 90 minutes

Why Your Baby Is Not On A Schedule Yet

If you feel like you cannot find a pattern, that is because there usually is not one yet. A newborn’s sleep-wake cycles do not start regulating into something predictable until around 3 to 4 months, once melatonin production and circadian signaling mature enough to support it. Trying to force a clock-based schedule before that point tends to create frustration without actually changing your baby’s sleep.

What does help in the meantime is following an eat, play, sleep rhythm rather than a fixed timetable. After your baby wakes and feeds, offer a short stretch of alert time, such as tummy time or a diaper change, then watch for sleepy cues like yawning, slower blinking, or that glazed, faraway look. Responding to those cues, rather than the clock, tends to result in easier transitions to sleep at this age.

Signs Your Newborn Is Getting Enough Sleep

It is easy to fixate on hour counts, but how your baby looks during awake time often tells you more than the total does. A well-rested newborn is generally calm and alert during wake windows, feeds well, and is relatively easy to soothe when upset, even though all babies cry as their primary way of communicating. If your baby seems consistently difficult to console, unusually drowsy, or is not waking for feedings on their own, that is worth mentioning to your pediatrician rather than waiting it out.

Common Worries, Addressed

But my baby sleeps better during the day than at night. This is called day-night confusion, and it is extremely common in the first few weeks. It usually resolves on its own as the circadian rhythm matures, though keeping daytime spaces bright and nighttime interactions calm and dim can help nudge it along.

But my baby only naps for 30 minutes at a time. Short naps are typical for newborns and are not usually a sign of a sleep problem. They tend to lengthen naturally over the first few months as your baby’s sleep cycles mature.

But every baby on the internet seems to sleep through the night already. Very few babies sleep through the night before 3 months, and many do not until well past that. If you are wondering whether your baby is ready for more structured sleep training down the line, our guide on when to start sleep training walks through the readiness signs pediatric experts look for.

But what if my baby seems to sleep too much? Newborns who are difficult to wake for feeds, especially in the first weeks, should be evaluated by a pediatrician, since adequate feeding during this stage matters for weight gain and overall health.

Safe Sleep For Newborn Sleep

Whatever your baby’s total sleep looks like, where and how they sleep matters just as much as how long. Every sleep, including naps, should happen on a firm, flat surface with your baby on their back, with no loose blankets, pillows, or soft bedding in the sleep space. The American Academy of Pediatrics’ safe sleep guidelines go into more detail on room sharing, swaddling, and reducing SIDS risk, and are worth reviewing even if you feel like you already know the basics, since the recommendations are updated periodically.

Try This Week

• Track total sleep and wake windows for three days to learn your baby’s actual patterns
• Watch for sleepy cues like yawning or a glazed look instead of relying on the clock
• Keep nighttime feeds and changes low light and low stimulation
• Open blinds and keep normal household noise during the day to support day-night learning
• Start a simple eat, play, sleep rhythm rather than a fixed schedule
• Place your baby on their back on a firm surface for every single sleep
• Skip sleep positioners, wedges, and inclined sleepers entirely
• Room share if possible, with baby on a separate firm surface
• Note any stretch where your baby is unusually hard to wake or feed, and call your pediatrician if it happens
• Give yourself permission to nap or rest during one of your baby’s daytime sleep stretches
• Ask a partner or support person to take one night feed if breastfeeding allows it
• Revisit this guide again at the 3-month mark, since the ranges shift as your baby grows

Final Thoughts

Newborn sleep is unpredictable because your baby’s body has not finished building the systems that make sleep predictable. The waking, the short naps, and the day-night mix-up are not signs you are doing something wrong. There are signs your baby is exactly where they should be developmentally. Pick one thing from this guide, whether it is tracking wake windows or adjusting your nighttime routine, and give it a try this week.

Photo by Hu Chen: Unsplash