Pediasure or Formula???

Back from the pediatrician: She wants him to be on formula instead of milk for the next two weeks, and then transition to formula. She's afraid he may have some digestive problems with the pediasure if we don't transition to it. So we'll be giving him formula & food for the next 2 weeks, hoping he gets bigger. If we haven't noticed a change in a month we go back to the dr. for another option. We also go to WIC on friday so hopefully he'll have formula & pediasure prescribed through WIC. I met his little brother today at a visit and he's very very tiny for 3/4 months and will be 2 months in a week. He slept the whole entire time. Gotta start dinner while T is taking a quick nap. -LeenaB