For males 60+ with LARS here’s what I did:
Cut back on food and reduce it to the absolute minimum to survive.
If that fixes it, then slowly add back foodstuffs gradually to find the food that causes LARS problems and simply avoid eating it.
I cannot overeat no matter what my diet is: I must always be slightly hungry.
To disobey and even slightly overeat is taking a risk: welcome to the latrine!
If cutting back doesn’t fix the problem, and you end up living on Ensures, or an equivalent nutritional drink, then you’ll have to talk to a gastroenterologist.
I feel you pain.