L.S.
most if his nutrition needs to come from formula or breastmilk at 6 mo to at least 9 mo and many breastfed babies until one year. If he is still hungry make sure you are giving him enough formula or breastmilk. I would give him solids after you have nursed or fed him his formula so that he does not fill up on solids. I would be more concerned with if you are feeding him enough breastmilk or formula first. Every baby is different. My daughter is almost 7 months and won't eat any solids yet. Did you ask your doctor? Maybe 2 ounces a couple of times a day?