My 3 month old baby sucking her hand last 5-6 days all time she is I put mittens but still not working she is also chew her clothes and all fingers

A. Hello dear parent! Check of your baby is teething. Use Babyhug teethers. Maintain a good personal and oral hygiene. Gently press your child’s gums with a soft cotton cloth dipped in cold water to reduce teething discomfort. Good luck and take care