My mom fought the same thing, getting progressively worse. Finally, there was a clunk in her back and what looked like worms under her skin Her L4 disk slipped allowing only 4mm out of the 17mm it is supposed to have for her spinal cord. During emergency non both legs. During surgery, the doctors refused to believe she was still walking. She was maybe a week from being permanently paralized.
If you do wait, make sure you keep a close eye on it.
Good luck.
BTW - My mom put off surgery for over 10 years.
