That can’t have been an easy post to write, so I commend you in your honest, and your honest look at where you are, where you want to be and what stands in between.
“What stands in between” is not a barrier to stop you, it’s an obstacle course that can be navigated with time, patience, practice and, sometimes, it takes a few attempts to get there but if it’s right for you then it will be the right outcome.
Enthusiasm from your wife rather than “just” support is a tricky one. Is helping someone transition some thing she has always wanted/yearned to be able to do, probably not. Is it a challenge in life she was always wanted to overcome, probably not. BUT is it something she is happy to try to learn and adapt to, yes, and with that she is learning as she goes as well so it all takes time to make sense and become natural (heck, I learnt to speak a foreign language at school for 3yrs and I’m still a novice and that’s a comparison I never thought I would make!!)