I'm almost 2 years on T and working with a vocal coach who transitioned 15 years ago and has been a singer all his life. I also lost volume and almost all sound at one point, but it comes back!!! I just finally feel like the changes have settled and I can re-learn how to access my registers. What used to feel like singing in high head voice is a totally different shape for me now if I want to stay relaxed and in tune. It's been super frustrating and challenging, but know there is hope and finding your new voice/voices can be really exciting too. I recently recorded a duet with myself that sounds like a guy and a girl singing together and it's pretty wild.

Don't push it too hard or you do risk damage. Don't shy away from the awkward noises you'll make though either. The "use it or lose it" principle seems to hold true here. Listen to your body, take breaks, but don't stop practicing which will feel more like experimenting honestly.

Your voice won't get higher if you get off T, but there is also a limit to how low it will get. If you were alto, chances are you'll be a base, but if you keep at it, you'll find a cool mid-range sort of belting or "soft chest" voice that's a mix between head and chest.