Routine · Ages 0–8 · 7 min

Sleep and development: how many hours your child really needs

Sleep is when the brain consolidates learning, releases growth hormone and reorganises the day's emotions. Not sleeping enough rarely makes a child look sleepy — it usually makes them wired, irritable and unfocused. Here's how much is expected by age, and how to build a routine that holds.

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Young child sleeping peacefully in bed with a plush toy and a dim night light

🕐 How many hours

Expected total sleep by age (per 24 h).

Add nights and naps together. Ranges are references — watch your child's mood and energy.

0–3 months

14 to 17 hours, spread across many short blocks, day and night.

4–11 months

12 to 15 hours, with 2–3 naps gradually settling into a pattern.

1–2 years

11 to 14 hours, usually with one 1–2 hour nap.

3–5 years

10 to 13 hours. Naps typically fade out between 3 and 5.

6–8 years

9 to 12 hours overnight, no nap.

🔍 Warning signs

How to tell they're not sleeping enough.

Sleep deprivation in childhood rarely looks like sleepiness. Watch for:

Wired, hyperactive behaviour in the late afternoon
Outsized emotional blow-ups and easy tears
Trouble concentrating and reports from school
Falls asleep on any car trip
Wakes up very irritable or has to be dragged out of bed
Dysregulated appetite, especially for sugar

🌜 Bedtime routine

Four steps, always in the same order.

Predictability is what tells the body it's time to shut down. Keep the whole thing to 30–45 minutes.

1. Warm bath

The body-temperature drop after a bath helps trigger the sleep signal.

2. Light dinner and pyjamas

Avoid sugar and heavy meals in the last hour before bed.

3. Story with lights low

The same book on repeat is perfect. Screens stay out of the last 60 minutes.

4. Short, identical goodnight

Same phrase, same kiss, same order. A predictable ritual cuts negotiation.

Environment

Dark, cool (18–21 °C) and quiet — or with steady white noise.

Stable schedule

Same bedtime and wake time, weekends included (within an hour).

🌛 Night wakings

What to do at 3am.

Keep lights low and interaction minimal: less stimulation means a faster return to sleep
Use the same short phrase every time ('everything's fine, it's sleep time')
Nightmares: comfort, stay close, talk about it the next day
Night terrors (screaming while asleep): don't wake them, just keep them safe — it passes
Regressions come with developmental leaps and routine changes; they usually last a few weeks
Don't start habits at 3am that you can't keep up long term

🚩 Seek help

When to talk to your pediatrician.

Loud, frequent snoring, breathing pauses, mouth breathing during sleep, heavy sweating, very restless sleep or significant daytime sleepiness all deserve assessment — they can point to apnoea or airway obstruction, which directly affect growth and learning.

It's also worth a conversation if bedtime has become a daily hour-long battle, or if short sleep is persistently affecting school and mood.

Quick checklist