it is as good as its going to get baring any improvemants from another surgery- wich i have serious doubts about. my mission is to not let it get worse, have seen-as i know you have- to many people let their injury/pain get the best of them. after a while it is an easy thing to do.
It's good that you're determined to not allow your injury to limit you from living as normal of a life as possible, but really try to have the discipline to know when enough is enough for your body. It's like that phrase, "live fast, die young."
"Fast" is a different speed for everyone depending on their unique set of circumstances. Hold back enough so that you don't wear out your parts. Of course, this is easy for me to say and I suspect that if I were in your shoes, I'd be exactly the kind of person who would be so determined to be not defined by my disability that I'd be gung-ho to the point that it'd eventually come back to haunt me in my later years.
If you continue to need pain killers to get through typing sessions even after you've become proficient at typing properly and have developed the coordination and hand endurance you need, it might be time to consider an adapted approach like some of the other input methods that people have suggested here.
for reference, before i injured my arm i was doing curls with 45lb dumbells- 2 sets of 10. recently got myself to doing 1 set of 10 with 15lb. my goal is 2 sets of 8 with 20lb but dont think its going to happen. i can still do the 45lb with my lt arm;)
Curls with 45lb dumbells! Dude, you had some serious guns back in the day! No wonder this is so frustrating.
Again, without having access to a medical record for you, I can't say too much, but it may be a better goal to shoot for 2 sets of 15 with 8lbs or 3 sets of 20 with 5 lbs with your right arm. You need endurance far more than you need raw strength to carry out daily tasks and condition your hand and arm to hold up better throughout the day.
For someone looking to develop athletic power and a great beach physique, 2 sets of 8 reps would be perfect, but for you, number of reps means far more than the actual weight because the goal isn't to get you to the point in which you can move heavy objects with ease again.