How Much Sleep Do Children Actually Need?
Sleep needs vary by age and by child. As a rough guide, newborns sleep 14 to 17 hours in a 24-hour period, though in short stretches. By 6 months, many babies sleep 12 to 15 hours including naps. Toddlers aged 1 to 3 typically need 11 to 14 hours, and preschoolers 10 to 13. School-age children generally need 9 to 11 hours.
These are averages. Some children genuinely need less sleep than their peers, and some need more. Total sleep over 24 hours matters more than whether it's all happening at night. A toddler who naps for two hours in the afternoon may simply not be ready to sleep at 7pm, which is sometimes a source of parental frustration that's actually just normal biology.
Newborns and the First Few Months
Newborn sleep is biologically designed to be fragmented. Babies have short sleep cycles, small stomachs that need frequent feeding, and no established circadian rhythm. Waking every two to three hours is normal and expected. It doesn't mean anything is wrong with your baby or your parenting.
Circadian rhythms begin developing around 3 to 4 months. This is when many families start noticing longer stretches at night. Exposure to natural light during the day, keeping night feeds quiet and low-stimulation, and beginning some gentle bedtime routine can all help the process along. But some babies simply take longer, and there's a wide range of normal.
4 to 12 Months
The 4-month sleep regression is real and can be genuinely disruptive. It coincides with a change in how babies cycle through sleep stages, moving to a more adult-like pattern. Babies who previously slept well may start waking more frequently. This is developmental, not a problem to fix.
By 6 months, many but not all babies are capable of sleeping for longer stretches at night from a developmental and nutritional standpoint. Whether they actually do depends on temperament, habits, and environment. There's no single right approach to sleep training. Some families find a graduated response works well, where you allow increasing periods before responding to night waking. Others prefer a more responsive approach. Both are reasonable. The evidence on outcomes is modest and somewhat contested. What matters most is finding something sustainable for your family.
Toddlers and Preschoolers
Sleep challenges in toddlers often have different roots than in infants. Overtiredness, undertiredness, developmental leaps, separation anxiety, and newly discovered ability to get out of bed are all common culprits. Consistency matters a great deal at this age. A predictable bedtime routine, a consistent time, and clear expectations (even if they take time to stick) tend to work better than frequent changes in approach.
Nap transitions can disrupt night sleep temporarily. Most children drop their daytime nap somewhere between ages 2 and 4, and the transition period can involve some earlier waking or later settling. This usually stabilises within a few weeks.
When to See a Doctor
Most sleep issues in children are behavioural and developmental rather than medical. That said, there are situations where a medical assessment is worthwhile.
Loud snoring, pauses in breathing during sleep, or very restless sleep may indicate obstructive sleep apnoea. This is more common than many parents realise and can affect a child's behaviour, attention, and development during the day. It warrants assessment.
Significant night terrors, sleepwalking, or unusual movements during sleep should also be looked at. Persistent bedwetting beyond age 5 or 6 may warrant investigation if it's causing distress.
If your child's sleep difficulties are affecting your mental health significantly, that's also a good reason to come in. Parental exhaustion is a medical issue too, and there are supports available.
A Word to Tired Parents
There is an enormous amount of advice available about children's sleep, and much of it is contradictory. Parents often come in feeling like they've been doing something wrong. In my experience, most of them haven't. Sleep development varies enormously between children, and the child who sleeps through at 8 weeks and the one still waking at 18 months can both be completely normal.
If you're struggling, come in. We can talk through what's happening, rule out anything medical, and think together about what might help for your specific child and family. You don't need to be at crisis point to ask for help.
Concerned about your child's sleep?
Book with Dr. Khushboo Paul at Glenwood or Hornsby for a paediatric consultation.
Disclaimer: This article is intended for general informational purposes only and does not constitute medical advice. Please consult your GP for advice tailored to your individual circumstances.