Yes it's OK to let your baby sleep with a pacifier in their mouth.
A pacifier is actually a good thing for baby to sleep with because the use of a pacifier when a baby is sleeping can help keep the baby breathing properly and help reduce the risk of SIDS.
So by letting your baby sleep with a pacifier in their mouth at night you can help them sleep better and keep them calm and relaxed at night.
And also you may be saving their lives by allowing the baby to sleep with a pacifier.
My kids slept with pacifiers when they were babies and they all turned out just fine.
The doctor actually recommended the babies sleep with pacifiers to reduce the risk of SIDS.
Pacifiers are a wonderful thing for babies to keep them calm, relaxed and help keep them safe.