My child refuses to sleep even though they're exhausted

My child refuses to sleep even though they are exhausted

The signs are there: yawning, rubbing eyes, irritability.

Yet, at bedtime, your baby becomes agitated, cries, or tries to resist.
This paradox, common between 6 months and 2 years, can be disconcerting.
It's not defiance, but a signal to listen to. Here's how to decipher and support this sleep resistance.

Why does baby fight sleep?

Sleep doesn't come on command. It requires the body and mind to relax. However, some babies find it hard to let go, even when their bodies are exhausted. Several factors can explain this behavior:

Missing the sleep window: the baby then becomes overstimulated, too awake, or even agitated.
An accumulation of unreleased emotional tension during the day (stress, frustration, changes).
Poor day/night synchronization (screens, light, irregular schedules).
An overly stimulating or not secure enough environment.
Separation anxiety: baby knows you're going to leave and tries to prolong your presence.

What sleep science says

Between 6 and 24 months, children need an average of 11 to 15 hours of sleep per 24 hours, divided between night and 1 to 2 naps.

When a baby doesn't get enough sleep, they enter a phase of hyper-arousal, linked to increased cortisol production (stress hormone) which blocks melatonin (sleep hormone).

How to help them fall asleep?

Observe signs of fatigue (yawning, staring blankly, irritability) to not miss the sleep window.
Establish a predictable routine: warm bath, story, dim lights, soft song.
Ease daily tensions with cuddle time, a massage, or a calm play session.
Create a sleep-friendly environment: well-ventilated room, not too hot, soft nightlight if needed.
Limit emotional and sensory stimulation in the last hour before bedtime.

What to avoid

Putting them back to bed too early if they've passed their sleep window: it's better to wait for the next wave.
Multiplying injunctions or negotiations.
Using distractions like television to "put them to sleep."
Changing approach too often.

What if it's just a phase?

Refusing to sleep can sometimes be asserting autonomy. Around 12-18 months, children test boundaries, seek to decide for themselves, and also experience major cognitive and emotional upheavals.

Sleep, then, becomes a field of expression. They need to feel that you are holding steady.

When to seek help?

If falling asleep consistently becomes long and conflictual, if night awakenings intensify, or if fatigue becomes too prevalent for the child or for you, do not hesitate to consult a professional specialized in sleep or parenting.

Conclusion

A child who refuses to sleep despite fatigue is not being capricious: they need to be understood, contained, and supported. With a stable framework and benevolent rituals, sleep can once again become a moment of calm and connection.