I prolonged the surgery for a couple of years by wearing the hand braces , I was even told to wear then at night! And it does help, early last year it was progressively getting worse, no matter if I wore the hand braces and did the exercises.....It got so bad with my left hand that I could no longer even feel if my hair was wet! So I bit the bullet, had a nerve study done, my left hand was worse than my right. I had the surgery in October...it's very easy...wore a soft cast for a week, then a week later had the stitches removed. Started PT and am now back to work, I had a longer recovery time because my job requires lifting and I work 12 hour days, I was actually out 11 weeks! I still have a little swelling in my wrist but each day it gets better. I will have the right hand done later this year if I can wait that long.
But I really had no pain from the surgery and the numbness was gone that day and haven't had it since in my left hand.
But try wearing the braces when you are sleeping and when you are sewing.