Wow, been a while since I have been here.
There is another explanation for the increase in stomach air...especially with not eating. When you don't eat, there is nothing for the stomach acid to digest, therefore, nothing to settle it down. In my situation if I don't eat I am worse off, I begin to swell, stomach gargles loudly, and I tend to belch a lot. I can feel my stomach churning, and watch my gut swell up.
I would suggest eating small bits just to keep your stomach acid knocked down some, see if that helps at all.