
A newborn waking up every hour, an exhausted parent who ends up falling asleep with the baby on the couch: this is often the scenario in which cosleeping occurs, without preparation or consideration for safety. It’s better to anticipate this sleep arrangement than to endure it out of fatigue, as the difference between well-thought-out nighttime proximity and a risky situation lies in a few very concrete details.
Couch or chair cosleeping: the trap that exhausted parents don’t see
Falling asleep with a baby in a chair, on a couch, or in a soft mattress constitutes the most dangerous scenario for the infant. Cushions, armrests, and gaps in the furniture create areas of entrapment and suffocation that the parent’s deep sleep prevents them from detecting.
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The latest safe sleep guides place this situation at the top of the risks, well ahead of shared beds. The problem is that no one decides to sleep on the couch: you slip there at 3 a.m., baby in arms, after a prolonged feeding.
The solution is concrete: if nighttime breastfeeding regularly leads to unintentional falling asleep, it’s better to plan a secure cosleeping space in the room rather than relying on vigilance. Detailed guidelines can be found in the cosleeping guide on Puériculture Bébés to organize this space.
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Room-sharing and bed-sharing: two cosleeping practices with very different risks
The term cosleeping encompasses two realities that many parents confuse. Room-sharing involves sleeping in the same room as the baby, but on separate surfaces: a crib next to the parental bed, a co-sleeping bed attached, a bassinet placed on the floor. Bed-sharing, on the other hand, refers to sharing the same mattress.
This distinction changes everything in terms of safety. Room-sharing is recommended for at least the first six months. It facilitates nighttime feedings, reassures the parent who hears the baby’s breathing, and reduces tiring movements between two rooms.
Why bed-sharing divides health professionals
Bed-sharing remains controversial. Some professionals strongly advise against it due to the risk of crushing or overheating. Others believe that with an appropriate sleep environment, bed-sharing can be practiced reasonably safely, especially in the context of breastfeeding.
Recommendations vary by country and institution. What is unanimous, however, is the list of situations where bed-sharing should be categorically avoided:
- When a parent has consumed alcohol, a sedative, or any substance impairing alertness, even in small amounts
- When the baby is premature or had a particularly low birth weight
- On a couch, an armchair, or a soft mattress
- When another child or a pet is also sharing the bed
Safe sleep surface: mattress, temperature, and nothing else
If you choose to practice cosleeping, whether it’s a co-sleeping crib attached or a shared bed, the environment should be as “bare” as possible. Recent recommendations emphasize a simple principle: a firm, flat mattress, with no objects around the baby.
Specifically, pillows should be removed from the vicinity of the infant, the duvet (which should be replaced with an appropriate sleeping bag), bumpers, positioning nests or cocoons, stuffed animals, and any fabric that could cover the baby’s face.
Room temperature, a often overlooked criterion
Overheating is one of the risk factors associated with sudden infant death syndrome. The recommended temperature range for the room is between 16 and 20 °C. In cosleeping, the parent’s body heat adds to that of the room, making this parameter even more critical.
A thermometer in the room and a sleeping bag suitable for the season are sufficient to control this risk. A baby who sweats at the neck is sleeping in an environment that is too hot, regardless of the sleeping arrangement.

Cosleeping and nighttime breastfeeding: an adaptable organization
Cosleeping in room-sharing significantly simplifies nighttime breastfeeding. The baby signals hunger, the parent takes them from the attached co-sleeping crib, breastfeeds in a lying or sitting position, and then places them back on their sleep surface. The cycle takes a few minutes instead of requiring a full get-up.
This arrangement reduces the parents’ sleep debt, which has an indirect effect on safety: a less exhausted parent makes better decisions at 3 a.m.. This is, after all, the main argument of proponents of organized cosleeping against improvised situations on the couch.
When and how to transition the sleeping arrangement
After the first six months, the transition to a bed in a separate room can be gradual. Start by moving the co-sleeping crib a few centimeters away from the parental bed, then move it into the baby’s room while maintaining a reassuring presence at bedtime.
Forcing a sudden transition often results in a setback. It’s better to dedicate a few weeks to this, observing the baby’s reactions, than to seek an immediate result that won’t hold.
Well-organized cosleeping is neither a dogma nor a taboo. It is a pragmatic management of family sleep during the first months, with a non-negotiable imperative: the baby’s sleeping surface must remain firm, flat, and clear.