What “sleeping through” actually means
Some research counts five or six hours of uninterrupted sleep as “sleeping through”, even though it does not feel that way to exhausted parents.
Age matters enormously
A newborn, a four-month-old and a one-year-old should not be measured by the same standard.
Progress is still progress
Fewer wakes, faster resettling and a longer first stretch are all meaningful improvements.
Important: every baby's sleep is different. Avoid one-size-fits-all promises, and always put feeding, growth and safer sleep first.
Safer sleep reminder. For babies, use a firm, flat sleep surface and follow the latest safer sleep advice from the NHS and The Lullaby Trust.
What's affecting your baby's sleep?
The Petit Nuage Sleep quiz considers your baby's age, naps, night waking and how they settle, helping you work out what to focus on first.
Take the 2-minute quiz →Ready to get started?
Get your baby sleep guide — £22.90 →Secure checkout with Hotmart · Instant access to your digital guide
Frequently asked questions
When do babies sleep through the night?
There is no universal age. Some do it earlier, many do it later.
Is my baby behind if they do not?
No. Sleep varies widely.
What should I focus on instead?
Look at the overall trend: fewer wakes, better naps and calmer bedtimes.
Reference sources: NHS baby sleep guidance · The Lullaby Trust safer sleep information. Last updated: 28 October 2026.