Breastmilk and Formula

Jacky

Has anyone started giving formula and mixing it with breastmilk? I’m thinking of giving my son formula just bec I think my milk supply is not enough. I still pump after I nurse him and saved the milk for later evening and I would get a total of 4 oz. it looks like he still wants more milk at night so after I give him the bottle I would nurse him after. If so what kind of formula do use?