A first night at the grandparents' goes more smoothly when your baby finds familiar things there: their comforter, their bedtime routine, a sleeping bag they know. There is no ideal age set by professionals. The right moment depends mainly on your child's temperament, on how ready you feel yourself and on safe sleep conditions at the grandparents' home.
This night is often harder for the parents than for the baby. Here's how to prepare for it, what to pass on to the grandparents, and how to respond to your child's reaction when you get back.
At what age should you consider a first night at the grandparents'?
No official recommendation sets an age. Naître et grandir (a Canadian parenting resource), in a fact sheet reviewed by a psychologist and updated in July 2025, actually stresses that there is no ideal age.
The same source notes that separations started early and introduced gradually help children develop their ability to adapt. A night away from the parents does not harm attachment when the child is left with adults they know.
A few things can still help you choose the moment:
- Breastfeeding: an exclusively breastfed baby relies on your feeds at night. A first night often waits until feeding is more flexible.
- Sensitive phases: around 8 months, separation anxiety makes goodbyes more emotional. Around 2 years, the need for control can make bedtime trickier.
- The context: a new baby, a house move or starting nursery already unsettle familiar routines. It's best not to add a night away in the same week.
- Your state of mind: if you're very anxious, your child will sense it. There's no rush at all.
Preparing your child before the big day
Preparation starts a few days beforehand, with small, very practical things.
Get them used to the place
If your baby already knows the house, the bedroom and the sounds, the night will be less unsettling. A nap at the grandparents' a few weeks before makes a good rehearsal.
Talk about it simply
As soon as your child understands a little language, mention the night a day or two before, as something to look forward to. Naître et grandir advises presenting the event positively, without dwelling on it or making it dramatic.
Take a little bit of home
The comforter is a must. Add items that smell of home: a sheet, a piece of clothing worn by a parent, the usual night light. Our article on comforters and transitional objects explains why these familiar things are so reassuring.
An older child can choose for themselves what to take. This small power to decide helps them feel part of the separation rather than subject to it.
What to pass on to the grandparents
The grandparents raised their own children, but the guidance has changed. A short written note avoids plenty of misunderstandings, without calling their experience into question.
The bedtime routine
Describe exactly what you do: bath or not, story, song, lighting, usual time. Recognising their routine reassures the child, as Naître et grandir points out. Our article on routines and emotional security goes into this in more depth.
Safe sleep rules
This is the most important point, and the one that has changed most in a generation. The Assurance Maladie (France's national health insurance), on a page updated on 10 October 2024, sets out the following rules:
- Lay your baby down on their back, flat, for every night and every nap.
- Use a suitable cot with bars spaced 4.5 to 6.5 cm apart and a firm, correctly sized mattress.
- Nothing soft in the cot: no pillow, no duvet, no cot bumper, no rolled-up towel.
- A correctly sized baby sleeping bag rather than a blanket, as blankets are only suitable after 3 years.
- A room between 18 and 20 °C.
The Agence de la santé publique du Canada (the Public Health Agency of Canada), in advice for grandparents updated in January 2026, adds two points. A baby never sleeps on a sofa or in an adult bed. They must not get too hot either: no hat indoors.
To find out more, read our article on safe sleep for newborns and our guide to choosing a baby sleeping bag.
Practical information
- Meal and bottle times, with the usual amounts.
- Your child's own signs of tiredness.
- Any medication, allergies and the child health record.
- Your contact details, those of your GP and the emergency number 15.
On the night itself: how to say goodbye
A clear goodbye is better than slipping away. Leaving without warning may reassure the adult at the time, but a child who discovers you've gone loses trust.
Tell them you're leaving, that you'll be back tomorrow, and when: “after breakfast”, for example. A toddler doesn't understand clock times, but they do understand the moments of the day.
Keep the goodbye short, even if they cry. Tears at the moment of separation are common and don't mean the night will go badly. In most cases, they settle quickly once the parent has left.
Your baby cried or slept badly: should you give up?
No, not necessarily. Naître et grandir puts it clearly: a child's reaction at the moment of separation is not a reason to stop letting them sleep elsewhere.
A restless first night is common. The place is new, so are the sounds, and the child wakes up somewhere they don't recognise straight away. The following nights often go better.
Agree in advance with the grandparents what they'll do if your child wakes for a long time. Should they call you? From when? Deciding together stops them feeling judged and stops you being woken for nothing.
If the waking and crying coincide with a phase of separation anxiety, our article on separation anxiety helps you understand what's going on.
Coming back home
When you return, some children throw themselves into your arms. Others ignore you for a few minutes, or become clingier and grumpier for a day or two.
These reactions are normal. They often express the emotion of the separation, sometimes a passing feeling of having been left. Naître et grandir encourages parents to recognise their own emotions too, to better understand their child's.
Stay available, return to your usual routines and avoid planning another separation straight afterwards. Thank the grandparents too: their confidence matters for next time.
What to bring for the night
There's no need to buy everything twice. A suitable cot, a sleeping bag and a nappy changing area are enough for one night. We've set out the full list in our article on baby equipment at the grandparents'.
A travel cot can help out, provided you use the original mattress with no extra mattress added. The Canadian authorities, which are stricter, do not recommend playpens for unsupervised sleep: check the manufacturer's instructions and choose a cot with bars whenever possible.
More broadly, finding your place as a grandparent takes time. Our article on the role of grandparents offers ideas for setting boundaries without upsetting anyone.
Key takeaways
- There's no ideal age for a first night at the grandparents'.
- A comforter, things from home and the usual routine are the best anchors.
- Safe sleep rules apply everywhere: on the back, suitable cot, nothing soft, sleeping bag.
- A clear, short goodbye is better than slipping away.
- Tears or a restless night don't mean you should give up.
Sources
- Naître et grandir, “Dormir ailleurs sans ses parents”, reviewed by Nathalie Parent, psychologist, updated July 2025.
- Assurance Maladie (ameli.fr), “Comment bien coucher un bébé?”, updated 10 October 2024.
- Agence de la santé publique du Canada, “Conseils pour un sommeil sécuritaire des nourrissons à l'intention des grands-parents”, updated 29 January 2026.
