Baby wakes up at night to lick her hand

Ahhh mummy, my baby is 4 months and also the exact same situation! Will forever break out of swaddle no matter how tight we wrap him! He’s using velcro swaddle. And even flip in his sleep. Which he end up waking up and cry. They suck on sleeve or finger to self soothe. For me i would give him pacifier when i see him sucking on his finger. Cause when he suck, he cannot really sleep “peacefully”. When its bedtime, i would change diaper, give pacifier, swaddle him tight using velcro swaddle, on white noise.

Suck fingers vs suck pacifier. I feel it’s better to suck pacifier as it can be thrown away later to kick the habit whereas you can’t throw the fingers away.