That’s partly my thinking. I think it takes him a long time to get food through his stomach, I don’t think don’t think more regular meals help because that’s just adding more un-digested food on top of what’s already in there.I’m so sorry. You must be exhausted with worry and trying to think of new ways to help Homer. Have they looked at how his stomach empties on the other end? Is the food able to easily move into the small intestine? Also clutching at straws, but this came to mind thinking of Ozempic (diabetic drug that my SIL is on), which slows down stomach emptying which makes her feel nauseas. If Homer’s stomach could empty faster (in the right direction), it hopefully wouldn’t come back up.