in case of insufficient of breast feeding which is the best food for 4 month old girl baby?

A. In case of less breast feeding the best thing that you can give to the child at the current age is only going to be formula feeding that is the right food or feed you can call it whatever that’s only the thing that you can give as of now there has to be a right age to start with food for the child and this is definitely not the right age as of now