This is gonna sound weird. I am a 68 y/o male and have real problems with constipation. One thing that helps is going to the gym and using the rowing machine. It gets my knees up above my lower body, and the back and forth motion seems to create a peristaltic effect.

Maybe the same thing would work for gas. I realize this is a long shot, and that not everyone has access to a gym or a rower. Just thought I'd mention it.

I also notice that when I go to bed - I sleep on my side with a regular pillow between my knees, I'm most likely to get some relief from gas.

Hope this helps, at least a little. All the best to everyone.