Hi Julie
Sorry to hear your CTS is giving you so much trouble. I'm up here in Scotland & had CTS surgery in 1996/7 I think it was. I waited about 6 months to see the orthopaedic surgeon then about another 6 months before he operated on my worst hand. The other one was done about 4 months later. I think we now live in the land of the NHS Lottery where it's just your luck as to the length of time you have to wait.
Have you had any NCV/EMG testing done? If it shows any nerve damage/severe CTS, they might just push you up the queue a bit faster. I had these tests done recently as I now have Cubital Tunnel Syndrome & I had to wait about 4 months from seeing the consultant to get them done!

It costs something like £2,300 to get one hand done via private medicine if you get really desperate.
The good news is that it might not be necessary to change your job. Before my CTS surgery, I hardly touched a keyboard - maybe about 8-10 hours a week. Now I use one 8-10 hours a day & don't have much trouble with CTS at all. The muscles below my thumbs are wasted so I do tend to drop things - I just avoid picking up expensive/breakable items in stores!
The neurologist tested my median nerve while he was checking out the ulnar one & said it was absolutely fine, so the excessive keyboarding/mousing has done me no harm whatsoever. I still sometimes wear splints in bed at night & I'm putting off the Cubital Surgery for now. Same surgeon as last time who now has CUTS too & isn't planning surgery so that's good enough for me. I'd heard the results weren't always wonderful.
Have you got splints to wear in bed? Night time only is best because if you wear them all the time you end up with weakened wrist muscles through lack of use. I take Vitamin B6 & Bromelain/Papain tablets to try & keep the nerves healthy & reduce inflammation.
Try not to be too despondent - there's light at the end of the carpal tunnel!
Best wishes & hope you get some relief from that pain soon.
Lidia