Well, peanut butter and jelly isn't as great as it seems, because it is high in sugar, which promotes diarrhea, particularly if your gut is used to Ensure. It is even possible you have peanut allergy, one of the most common food intolerances. Things like oatmeal, rice, tapioca, banana and applesauce are better transition foods.
It sounds like you are having spasms in your sphincters. I had those for a year or more post op. I don't know if it was the right thing or not, but I just tried to ignore them as much as I could, particularly since what I ate or didn't eat didn't seem to make a difference. Same thing with frequency. It is up to you how much you want to limit your diet, but I just ate what appealed to me and sometimes just paid the consequences. Eventually, my gut got used to it and things got better.
Again, I don't know what's right for you, but I would not want to live on Ensure unless it was an absolute necessity. I could handle diarrhea, but that's just me.
As to the bleeding, if the HC suppositories seem to reduce it, keep using them. If not, you may as well, stop them or reduce the frequency and see how it goes. Anticoagulants add another wrinkle to the mix, for sure.
Jan