My baby is 13 months takes thumb in his mouth. Please tell me ways to get rid of this habit.

its normal not to worry

Taking the thumb in the mouth is natural as baby's have a need to suckle. This is a self soothing technique. If baby is breast fed offer the breast often as this will satisfy the suckling need and baby will slowly stop using the thumb. Pacifiers and bottles are not recommended. Pulling the thumb out and making too much fuss about it will further strengthen the habit. Talk about it, be gentle and be patient.