30-40 oz. As a disclaimer, I feed him until he's satisfied each feed and his weight is in the 30% for his height so I think he just has a fast metabolism and is not actually over-eating. He's almost 6months and we have not started solids yet.
My LO will be 5 months on the 27th and she only drinks 20-25 oz in a 24 hour period. This is probably because she gets oatmeal in every bottle because of her reflux.
E will be 6 months on New Years Day and she currently gets between 32-36 oz a day, FF fed at this point. She is also getting cereal and veggie purees 2-3 times a day. At her last check up, she was almost 19 pounds. Growing baby!
Re: How many oz of formula is your LO have in day?