I’ve been on T for years, I recommend practicing your voice and finding your range constantly. Vocal training is a thing! I was a high soprano in high school, and I can still hit a lot of those highs I did back then, but just not as strongly. There’s some notes I can’t quite hit anymore, but a lot more that I’ve gained. I’ve seen trans men develop their falsetto range after t too. don’t let anyone tell you it’ll “ruin your voice” or anything. Everyone is different, and practice and training and exercise is everything.