What should be the baby weight at the end of 7th month

Hlw mommies m worried mere baby k tongue me white white jama h kuch nd lips k andar side chaale b ho rakhe hain ye kya h wo abi 10 month ka ho gya h

Hello friends. My baby girl has turned 40 days today. She was born very fair but then she got jaundice on 5 th day. Dr suggested exposing to morning sunlight. Now her skin has tanned completely and she looks so dark now. Plz let me know if she ll regain her original complexion or any home remedies beside besan and malai. M giving her coconut oil massage daily. Worried mom . Thanks .