Gassy baby

Pooja • Baby boy born on march 7th 2016.He is gonna be a big brother soon.. expecting second baby on april 2018
My baby is super gassy most of the time.. I used to burp him after each feeding(breast feeding). We give him milicon every other feed. He used to butp immediately or pass gas. But now a days it seems like milicon is not working. He does not burp even after 30 mins of patting him on his back and seems to be in lot of pain and discomfort. We tried gripewater but he doesnt like it and not ready to take it. Any other way to reduce bloating?