Just my totally non-medical advice. Working with a dietician who has advised fiber is actually counterproductive for tortuous colon. I’ve been following a low-fiber diet and though, not perfect by any means, have felt better the past month and mostly better BM’s. Have had to add in some mag oxide and Miralax occasionally to move things along and must drink a lot of water. I’ve also been under a huge amount of stress last too weeks with two new diagnoses to deal with.