I also have a redundant colon, transverse and sigmoid. Saw a colorectal surgeon who suggested further testing, consider laparoscopic sigmoid resection. Putting that on hold and trying to manage it with lifestyle and strengthening pelvic floor. I agree it is hard to know what to eat because of course we worry about obstruction! I have been able to increase my fiber intake (about 20-25grams) gradually as long as I’m drinking 2 L of water and taking 4 ounces of warm prune juice at night. Since I’ve done that, I am getting much better movements and not having as much abdominal pain since I am clearer. This condition sucks. Wishing you the best of luck.