Sorry to hear of your ongoing incontinent problem. I have lots of empathy for you. Following my surgery, I had no control for 6 weeks. Fortunately, I did turn the corner and am 98% continent now after 9 months. I did the Kegel routine and lots of pelvic exercises. I haven’t had radiation or hormone therapy. (However, it’s been discussed as I have one lymph node with a Gleason 7. I’m doing active surveillance.)
Another option for you is to check with a bladder center. Here is one you could look into: https://bladdercenter.com/
They can run a simple test to see if it will work for you. In a week, you’ll know if you’re a candidate for the device, which they will want to insert into you.
Good luck, Jerry