Katie, i forgot to say that the Dr. Brown's bottles, helped a lot too. and regarding the infacol drops, my ped prescribed some drops that they sell here in Mexico, and they didn't work, it was really weird, 'cause the Mylicone drop have the same substance in them, that these drops my ped prescribed, and only the Mylicone did the work, and sometimes he was still in pain so the ped prescribed a stronger medicine, (but it tasted awfull!! so i only gave him the strong med at nightfeeds). so maybe another type of drops might help her???
about switching formulas, well i only switched once 'cause my ped didn't like switching that much. But maybe you can try a soy based formula, wich its much milder on the tummy???