How old is your baby? If he is newborn, try to burp him halfway through feeding, elevate his head while feeding and keep him in upright position for half an hour after feeding. Be careful not to press on his stomach while burping or carrying him. Avoid tummy time for half an hour after feeding too. Probiotic biogaia or ridwind could help too
After every feeding u hv to tap baby back until baby makes burp .. it helps from reflux due to air struck