Waiting lists, unfortunately, are a fact of life in this game. If it's any consolation, I had to wait 4 months between getting my HRT letter and seeing the doctor who would prescribe them. And that's only because I am a low-risk patient and didn't need to see the endo. A lot of my friends have had to wait eight months to a year to see the endo.
Patience may be a virtue elsewhere, but here it's a necessity.
Once you start on HRT, you will have to wait for your breasts to grow, which will take months or years. If you decide to have surgery, there will be more waiting.
Take a deep breath. Relax. You are finally on the road that will take you where you need to go.