I had my fourth surgery in less than a year due to diverticulitis 3 weeks ago. Ended up having Deloyer procedure done this time. My system still does not seem normal, although I am at the opposite end from you , with diarrhea rather than constipation. My surgeon prescribed taking 2 Senekot everyday to make sure things moved along. I am still on a soft, low fiber diet but hope to advance that once I see him for my follow up later this week. As for the Senekot, it has worked too well for my system and I had to back dosage down. I have not taken any for a week and things are moving fine. It is a plant based stool softener and seems to be gentler than some of the laxatives out there. Senna is also what is in the Smooth Move herbal tea. Maybe you could try that as well if you haven't all ready.
I would rather have the loose bowel movements than be constipated. I get panicked when nothing comes out, as that has been the precursor to every hospital visit this past year! I am hoping things get back to normal soon. I know it took about 5 to 6 weeks last time. I hope you get back to normal soon as well. Let us know how you are doing!