Hello @trishplace and welcome to Mayo Clinic Connect. I am sorry to hear of your battle with diverticulitis. I join you in your fight to get back to "normal" while dealing with this problem. There are no easy answers. Everyone deals with it in a way that works for them.

Here are some suggestions that have worked for me. I find that my bouts with diverticulitis tend to get worse when I'm overly tired and I've been on my feet a lot. When a "bout" of diverticulitis begins I spend time laying down, often with a heating pad on my abdomen and only have liquids for a while, and then add soft foods until the pain is decreased.

Another suggestion is to keep a food/activity diary or journal if you will. If you do this regularly, you may find certain "triggers" to the bouts of pain. Perhaps it will be a certain type of food or a certain type of busyness that activates the pain.

We have other discussions on Connect where members have talked about diverticulitis. Here is a link to one of those discussions. Some of these members have had multiple surgeries and others have dealt with it with diet alone. Feel free to join in their discussion and ask them questions. When you read their post just click on "Reply" and join their discussion. I would like to invite one member, @thull to join this discussion.
https://connect.mayoclinic.org/discussion/diverticulitis-1/?commentsorder=newest#chv4-comment-stream-header
As you also mentioned IBS in the title of your post, I'm wondering if you are familiar with the FODMAP eating plan? I've tried this and so have many others with amazing success. Here is a link to this discussion as well https://connect.mayoclinic.org/discussion/fodmap-eating-plan/

Unfortunately, there are no quick fixes to this problem. It just takes diligence and healthy eating and consuming lots of liquids.

Will you post again with an update on how you are doing?