S.S.
I hav e the SAME issue...so I let him eat what he wants and make sure he has enough formula so that if he is not eating I know he is getting the nutrients he needs. My naturapath assures me he will not starve, and I believe that. Some days it is literally three bananas and some grapes. I have heard that after growth spurts the appetite shifts somewhat, so I think that is where we are.
Good Luck