Nice to meet you and welcome to the CP Forum! I'm sorry you're suffering from wrist pain especially since it's your source of income. I would imagine keeping it immobile is hard to do.
First thought I had is....are you confident in the diagnosis? If your doctor diagnosed you then he should be giving you much better treatment and help. Six months between visits is way too long for an ongoing problem. Maybe he doesn't think he needs to see you but YOU need him to get something going for you in the way of treatment. What he gave you obviously isn't helping so he needs to see you so he can try again...that is if you have faith in him.
If not then I would suggest either changing doctors or, my preference, go to a university/teaching hospital in your area. There is a thread at the top of the list called Chronic Pain 101. In there is a link to university/teaching hospitals world wide. I got the link for you so you wouldn't have to go searching for it.en.wikipedia.org/wiki/List_of_university_hospitals
There are a huge number of them in the UK. Look for the one nearest you, give them a call and explain your problem and I'm confident you will get the help you need.
Good luck and keep in touch with us...OK?
Moderator on the Fibromyalgia and Chronic Pain forums
Daily Donnybrook: Fibromyalgia, Insulin Dependent Diabetes. Ulcerative Colitis, Rare form of Dermatitis, Collapsed Disk, Osteoarthritis (especially in right hand and neck) and a couple of other adjunct agitations.
Use the talents you possess, for the woods would be very silent if no birds sang except the best.