After wearing splints 24/7 for too many years, I finally had surgery on my right wrist last January. It was the worst of the two. Best thing I ever did...no more numbness or pain. I do still wear the splint on my left hand, and when it gets to the point the right hand was, I will have that one repaired with surgery as well.
As someone already mentioned here, you need to speak with a hand surgeon. They will know what is best for YOU.
Good luck with whatever route you take.
Patti