Hi Backshift
I had the surgery about 7 years ago & the symptoms have come back, along with a bit of muscle wasting. I've been offered 2nd surgery a few times but turned it down. The reason is that the more surgery you have, the more scar tissue there is. The scar tissue squashes the median nerve & you're back to square one.
I do exercises with an elastic band to build up the muscles, take 100mg vitamin b6 per day, wear a cock-up splint on my dominant hand at night & sometimes a thumb splint during the day.
I keep reminding myself that things could be a lot worse. I have a friend who lost the use of his entire arm in a bike smash. I spend all day at a computer & my hobbies include artwork & gardening. A doctor might tell me that to stop doing these things would improve the cts but I wouldn't give up my hobbies. It's all just mind over matter I suppose.
Have you tried cortisone shots? Maybe the splints or b6 would be worth a try if you're not already doing that too. I read somewhere that there's now laser treatment for cts as well. Hope you find something to help soon.
Lidia