Talk to Pediatric Gastroenterologist on Motions After Every Diet

My 6 month baby girl having an issue of motions from the age of 5th month, if she don't take milk or any other diet for 2 or 2.5 hrs,she is ok, but as she takes her food, instantly she faces motions.... She is not on mother feed as it was ended after only one month. At the age of 2 months, she was on lactogen 1. At the age of 5 months i started cow milk as we cant afford lactogen after every 2 days... Got Checked her from 3 child specialist,and they suggest medicines like intamizol, flygel, Q-plex, ampoules, novidate ,etc. But still the issue didn't solved.. What should i do?