Man, you've been through the ringer. I wish I had answers for you but your situation is complex. I have read that drinking plenty of water can help. Sounds so simple but surprisingly people often don't pay attention to this. I assume you give special care to cleanliness? Both equipment used and skin around the stoma? I would guess you've already been told to stop alcohol consumption and caffeine. Empty pouch when 1/3 to half full max. There's also something called a hernia belt which can help. Ask your doctor about that