my daughter is 3 months n has some serious spit up issues its projectile we have done so much its unreal heres the list: infamil infant formula (she got constipated) gentleease, infamil soy (whats shes been on the longest and still is) we feed her sitting up we have burped every ounce and we feel it works her up more so we do half and half burps but doesnt seem to matter. we let her tummy settle before we do anything with her, but half the time she throws up regardless and im not talking spit up...