Like helping pooping
A young baby who is normal but has trouble passing gas
may just be learning how to relax down low in the pelvis, to let gas move down where it can be easily passed.
Sometimes holding his feet up & bending his knees up to near his tummy can help. If he seems to be very fussy, weak/soft in the muscles, not eating much, or bloating his tummy with air, a doctor can evaluate and give additional ideas.