I just read the new copy of Women's World magazine
May 31 issue.
On page 16 it has a little article about this problem.
It says "there's a new nonsurgical option called Renessa. It uses radio frequencies to tighten the muscles around the bladder. 70% of the patients who get it are cured or see improvements in their symptoms. It's done in a doctor's office without incision, under local anesthesia, and only takes 15-20min.".
Sounds hopeful.