If I had your situation, I would try eating for a soft stool. I would also avoid meat, it is too hard to digest.

I can eat only about 15 close-to-zero FODMAP foods, so have an extremely limited diet, but it give me a close to "normally" functioning gut without being plagued with IBS-C. Ask me for further details if you want. I also eat almost everything well-cooked, as that "predigest" it.

I also have a very redundant colon (no twists yet) and a rectocele. A soft stool is great for these problems.

I also sleep on my left side (to help things move along), and if stool is "stuck" in the rectocle, I sit on a firm chair, cross my right leg over my left thigh and lean to the left on my left cheek. This collapses my rectocele so the rectum operates more normally. Also, no tight pants, which I doubt you are wearing.

I also take a handful of supplements, including slipperly elm (inner bark only) tea. It supports the mucosa, per reports posted on the NIH website. Adding "slip" to get around all those adhesions, etc. makes sense.

Magnesium supplements draw water into the colon, are gentle, n=and soften stool. My GI doctor recommended 250mg, or if that didn't work for me 500mg. I take something a bit less. A product called Hilma Gentle Bowel Movement Support at 174mg a dose.

Hope some of this can help --