One thing that always helped our windy son is kinda hard to explain.
We'd lay him over our shoulder making sure it was his tummy that was in contact with our shoulder and not his chest and he was more upright than horizontal.
We'd hold him there using that side's hand on his back.
Then we'd firmly pat his bottom in an upward motion, this would make him kinda bounce up and down if that makes sense? Would always work out some massive burps and would be much more comfortable!