Welcome on PC!

I guess about 5 years ago or so I was in a similar situation. I started small. Searched in the good internet what identities are out there, see if I could relate and how it would feel if I talk about myself in this terms.

And I made a "gender triangle" between male/female/heckIdon'tKnow and looked every day where I would align myself today.
Sometimes it was in a corner, sometimes in the middle and sometimes on the outside.
The whole point for me was to deal with and to visualize these feelings and make something fun out of it.

Now I'm nearly one year on T, out in every aspekt of my life and it's sooo good. Especially the voice part. I had the same issue as you and now I started singing again

Of course it's a constant fight ("genderqueer? häääh?") but for me it's the better one.

Every story is different. Maybe my story will help you or give you some ideas, maybe your journey will be completely different. I just hope you find your way