The age when your baby or a baby can sleep with a stuffed animal is 12 months or 1 year of age or older.
Babies under 12 months of age or under 1 year of age should not sleep with a stuffed animal. blanket or other soft toy or object as it increases risk of suffocation and SIDS.
The best time to introduce a Lovey like a blanket or stuffed toy is around 12 months.
The only lovey your baby should have prior is a pacifier or auditory white noise.
By 12 months, your baby has been free of swaddling for a long while and is able to grab onto the lovey in the crib.
To keep the baby warm at night you can put the baby in some blanket sleepers or footed Pajamas.
The blanket sleepers are like a blanket but they wear them as pajamas which keeps the baby warm.
Also try to keep the babies room warmer than normal but not too hot as babies can get colder than adults can and babies cannot regulate their body temperature like adults can.