Hope the program works for you. I'm trying to recall any posts with problems you mentioned. I think it will be great for the diverticulitis to help clear those pockets. If your system can tolerate the different herbs and not cause the colitis to flare you will probably do okay. It's not unusual to have flu-like symptoms when the body is detoxing.

One of the most critical areas is to drink plenty of water and some have to halve their fiber intake if they start getting constipated. The tea usually helps prevent that. I find I'm very sensitive to the tea and steep for only a couple of minutes - it's trial and error.

Wish you both the best!