I'm not going to comment on whether or not the therapist is right or wrong. I will just relate my experience. I was in therapy for slightly more than a year (weekly or bi-weekly sessions depending on scheduling) before hormones even became a topic of conversation. The first time I brought it up, my therapist said we would talk about it at the next session. But that was when things got really bad with my (ex)wife. So hormones actually got tabled for a few months. When it came up again we had a discussion about the Standards of care and informed consent. Once he was sure I knew what the possible outcomes could be if I took hormones, He wrote me "the LETTER". He mailed me a copy and put a note in my file. (I go to a clinic with both therapists and doctors who will prescribe HRT.) So I made my appointment with the doctor. When he saw me I told him why I was there. He checked my chart and said, "OK I'll write the script". That first year or so was mostly about how I could possibly express myself more and still satisfy my wife. (That didn't work )
Think about using your sessions to discuss the implications of taking hormones. How it will affect your relationships? What happens when the physical changes can no longer be hidden? Stuff like that. So you have options for whatever scenarios you might find yourself in.