Try a keto or carnivore diet for 3 months see how you feel...
It's completely cleared up my IBS...
Lad at work has just started carnivore he had surgery several years ago to remove his Colon...had a bag for a while now has peg ...he's at the loo a dozen times a day and on medication for life with heart burn...after 10 days he's stopped the medication cos he doesn't have heart burn anymore....toilet breaks halved already...