Baby never burps

Taylor

My 2 month old is extremely gassy (we are on enfamil nutramigen) and have tried several different bottles including Dr. Browns, mams and now tommee tippee. He has constant bad gas and attempts to burp him to get rid of gas are worthless because he never burps. I've tried every position, rubbing patting etc. We give gas drops but they don't seem to do much either.

WHY is my baby so hard to burp/so damn gassy?!?