My baby is 18 month old now.but she is everyday frequently doing thumb-sucking,is there any problem?

A. Hello good morning !! Bottle feeding and comfort feel of sucking cause frequent thumb sucking. Avoid bottle feeding try to feed in glass,sipper cups and engage the baby in play like clapping ,waving hands,give toys to hold (not too small and sharp which might cause choking hazard) ,washed fruits,vegetables so that they try to hold,feel the texture and hands being engaged the baby diverts from thumb sucking.