J.C.
Well first of all does he seem to be constipated? Have you asked the doctor for advice? Usually my ped told me to give them a tsp of the dark Karo syrup and it usually works. Also when he gets a little older and say he is really constipated, I made the mistake of giving my daughter prunes one time and needless to say, they work. But I would seriously ask the doctor because maybe his formula is not working for him. Good luck!