Hi one of my biggest worries about transitioning has always been my voice. It is very deep and have often thought that i would never be able to raise it to sound more feminine.
I recently watched a youtube video about voice training. Sry i cant link it as it was protected. But the woman suggested just trying to speak a little higher, not much just a little. then when you get used to this try a little more, eventually getting to wear you want to be.
i have recently started doing this. i am studying towards a degree course and there is alot of reading involved. So what i have done is started to read my books out loud while studying in that slightly higher voice. This has the advantage of not taking up hours of time practicing separately.
I have found so far that authough this process will take some time i is making a difference. when im out i am still dressed male for a large part of the time (hoping to change that soon). but i have found that while talking in my typical male voice i do slip into the higher range on occasion. so hopefully by the time i go full time i will at least have a voice that can pass for female. Even if it is not perfect.