mjhs70
First, don't take anyone's word for a what to do without running it past your care team. Hopefully you have a number to call for support and get a reply with in a couple of hours.
From my regimen, you are missing the stool softener - ask about Colace - docusate.
Also missing is exercise - walk to encourage the bowels.
The hard lesson for me was learning to stay ahead of the constipation by taking the recommended drugs regularly, as recommended, and reporting any problems right away - before anything becomes an emergency.
I had a calendar to record BMs - date and time. At 48 hours without a movement, I was to call in for advice, and would be recommended to add additional of something or another. At 72 hours, it was time for an urgent visit.
Eventually, they had me on the boarder line of diarrhea. That was when it was time to back down a bit.
Hopefully, once the bowels start cooperating you can (if approved) move to a high fiber or other diet and get some weight back.
My biggest help was to record meds, food, liquid, activity and all problems on the calendar. That way I could call for advice with specifics and I could see what worked. Get all the help you need from your care team - they know this stuff.
Best,
Jack