I had my left wrist done on the 2nd. The right one a few years ago. The shots cut the inflammation but don't fix the problem.
My doctor use the 3M Agee endoscopic carpal tunnel release system. He makes one small incision in a skin crease on the wrist just below the hand. I had the surgery done on a Monday and the next Monday the ace bandage and gauze were removed and the external stitches removed. Very effective.