Observe if his tongue can come out of his mouth beyond his lower teeth.. if yes than it shouldn't be a problem for him in future.  If no than go for a tongue tie release operation before 3 years of his age

Tongue tie release is a small procedure only but it is usually done under general anaesthesia. I suggest u wait till tje baby grows up a bit, atleast 6months and then do it. Tongue tie would become a problem when he starts talking, so you can get it done before that. Right now, it is not an emergency is what i feel.wait till he is atleast 6months