Baby Sleep Schedule by Age: How Much Sleep Your Baby Needs

The short answer: newborns sleep 8-18 hours a day in short bursts, 3-6 month olds settle into longer night stretches, and by 6-12 months most babies manage 10-12 hours at night with 2-3 daytime naps. Every baby is different, but the NHS guidelines below give you a reliable baseline to work from.

Why Your Baby's Sleep Pattern Matters

Sleep is when your baby's brain does its heaviest lifting. Growth hormone releases during deep sleep, memories consolidate, and the immune system recharges. Getting the right amount of sleep at each stage isn't just about surviving the night - it directly affects your baby's development and daytime mood.

The tricky part is that "right amount" changes rapidly. A newborn's sleep pattern looks nothing like a 9 month old's, and trying to impose a rigid schedule on a 6 week old usually backfires. Understanding what's normal at each stage helps you work with your baby's biology instead of fighting it.

Newborn (0-3 Months): Sleep in Short Bursts

According to the NHS, newborns sleep between 8 and 18 hours a day. The wide range is completely normal - some babies are naturally higher sleep needs than others.

What catches most parents off guard is the pattern. Newborns don't sleep in one long block. They sleep in short bursts of 2-4 hours, waking for feeds around the clock. This isn't a sleep problem - it's how their tiny stomachs are designed. A newborn's stomach holds roughly 60-90ml, so they genuinely need to eat every 2-3 hours.

What to expect

• Total sleep: 8-18 hours across 24 hours
• Night stretches: 2-4 hours between feeds
• Daytime naps: 4-8 naps, lasting 20 minutes to 2 hours each
• Wake windows: 45-60 minutes (yes, really that short)

Practical tips for newborn sleep

Don't try to keep your newborn awake during the day to "build up tiredness for night." It doesn't work and leads to an overtired, screaming baby. Instead, follow their lead: watch for sleepy cues (yawning, looking away, fussing) and put them down as soon as you see them. A white noise machine at low volume can help create a consistent sleep environment that signals "it's time to rest."

Safe sleep is non-negotiable at this age. The NHS recommends your baby sleeps in the same room as you for at least the first 6 months, on their back, on a firm flat mattress, with no loose bedding, pillows, or bumper pads. A proper cot or Moses basket with a fitted sheet is all they need.

3 to 6 Months: Longer Stretches Emerge

By around 3 months, something shifts. Your baby's stomach has grown, they can take more milk per feed, and their circadian rhythm starts to develop. The NHS notes that by this stage, some babies may sleep for 8 hours or longer at night - though not all will.

What to expect

• Total sleep: 12-16 hours across 24 hours
• Night stretches: 5-8 hours (some babies sleep through, many still wake for 1-2 feeds)
• Daytime naps: 3-4 naps, gradually consolidating
• Wake windows: 1.5-2.5 hours

The 4-month sleep regression

Just when you think you've cracked it, around 4 months many babies go through a sleep regression. They wake more frequently at night, fight naps, and seem generally unsettled. This is linked to a developmental leap in brain architecture - their sleep cycles are maturing to become more like adult sleep cycles with lighter and deeper stages. It's frustrating, but it's a sign of healthy development. It typically resolves within 2-6 weeks if you stay consistent with your routine.

Introducing a bedtime routine

Now is a good time to start a simple, consistent bedtime routine. It doesn't need to be elaborate - a bath, a feed, a cuddle, then down in the cot is plenty. The key is doing the same things in the same order every night. Your baby's brain starts to recognise the pattern and prepare for sleep. Keep the room dim, use a white noise machine if it helps, and aim for a bedtime between 7pm and 8pm.

6 to 12 Months: The Sweet Spot

This is when sleep often improves significantly. The NHS says that by around 6 months, most babies can sleep up to 12 hours at night. Many drop to 2 naps during the day, and their wake windows stretch to 2.5-3.5 hours.

What to expect

• Total sleep: 12-16 hours across 24 hours
• Night stretches: 10-12 hours (some still need one feed)
• Daytime naps: 2 naps, eventually dropping to 1 around 12-15 months
• Wake windows: 2.5-4 hours

What can disrupt sleep at this age

Even when the sleep pattern is established, several things can throw it off:

• Teething: Usually starts around 6 months. Pain and discomfort can cause frequent night waking. Speak to your health visitor about age-appropriate teething relief.
• Separation anxiety: Babies this age start to understand object permanence - they know you exist when they can't see you. This can make bedtime harder. A comforter or transitional object (safe for over 12 months) can help.
• Illness: Colds, ear infections, and bugs disrupt sleep. Follow your GP's advice and focus on comfort rather than strict routines during illness.
• Developmental leaps: Learning to sit, crawl, or pull up can temporarily disrupt sleep as their brain processes new skills.

Sleep Totals by Age - Quick Reference

The table below summarises NHS-recommended sleep ranges. Remember, these are averages - your baby may need slightly more or less, and that's fine.

Wake Windows: The Secret to Fewer Fights

A wake window is the amount of time your baby can comfortably stay awake between sleeps. Get this right and bedtime becomes dramatically easier. Put them down too early and they won't be tired enough. Too late and they're overtired - which paradoxically makes it harder to fall asleep.

The general guidelines:

• 0-3 months: 45-60 minutes
• 3-6 months: 1.5-2.5 hours
• 6-9 months: 2.5-3.5 hours
• 9-12 months: 3-4 hours

Watch your baby, not the clock. Yawning, eye rubbing, ear pulling, and sudden fussiness are all signs they've hit their limit. The earlier you catch these cues, the easier settling becomes.

Products That Help With Baby Sleep

You don't need a cupboard full of gadgets to help your baby sleep well. A few well-chosen items make a genuine difference:

Building a Sleep Routine That Actually Works

Forget the rigid 7pm-on-the-dot schedules you see on parenting blogs. A good routine is flexible enough to bend when life happens but consistent enough that your baby knows what's coming. Here's what works for most families:

Step 1: Pick a consistent bedtime

Between 7pm and 8pm works well for most babies under 12 months. An early bedtime doesn't mean your baby will wake earlier - in fact, an overtired baby often wakes more, not less. Aim for a bedtime that lets them get 10-12 hours of night sleep.

Step 2: Create a wind-down sequence

About 30 minutes before bed, start dimming lights and reducing stimulation. A simple sequence works best: bath, pyjamas, feed, story or song, then into the cot. Do it in the same order every night. Your baby's brain will start to recognise the pattern and prepare for sleep.

Step 3: Put them down drowsy but awake

This is the hardest part but the most important. If your baby falls asleep feeding, being rocked, or being held, they'll expect the same conditions to fall back asleep when they naturally wake between sleep cycles. Putting them down while still awake (but clearly ready for sleep) teaches them to self-settle. It takes practice and patience, but it pays off.

Step 4: Keep the room sleep-friendly

Darkness signals melatonin production. Use blackout blinds or curtains to keep the room dark, especially during summer evenings when it stays light until 9pm in the UK. A white noise machine provides consistent background sound. The room temperature should be between 16-20°C, according to NHS safe sleep guidance.

When to Talk to Your Health Visitor

Most sleep issues are developmental phases that pass on their own. But there are times when professional advice is worth seeking:

• Your baby consistently sleeps far less than the ranges above
• Sleep has suddenly deteriorated and isn't improving after 2-3 weeks
• Your baby seems uncomfortable, in pain, or unusually distressed during sleep
• You're struggling with your own mental health due to sleep deprivation

Your health visitor is the first point of contact for sleep concerns. If needed, they can refer you to a sleep specialist. Don't suffer in silence - sleep deprivation affects your ability to care for your baby safely, and getting help is not a failure.

Frequently Asked Questions

The Bottom Line

Baby sleep is one of the most talked-about topics in parenting, and for good reason - it affects everything. But the most important thing to remember is that there's a huge range of normal. Your baby doesn't need to match someone else's Instagram-worthy sleep schedule.

Focus on the basics: safe sleep environment, age-appropriate wake windows, a consistent (but flexible) bedtime routine, and patience. The sleep will come. And in the meantime, a good white noise machine and a reliable baby monitor go a long way towards making the journey more manageable.

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Last reviewed: August 27, 2026 · Evidence-based content · Contains affiliate links