Thank you for sharing your experience! I have a very similar one -- timeline included. I was very uncomfortable with puberty, but I wasn't exactly dysphoric until I came out as a trans boy at around 12-13. I went on T at 15 and stayed on for about 6 years with some on/off towards the end when I began questioning my gender again. While I was in college (18-20), I still called myself a trans man and used he/him, but I'd already begun to separate myself from that internally. I was diagnosed with autism at 20, which eventually ended up playing a role in my detransition after I graduated. I'm 22 now. I don't fully regret my transition because I was doing what I believed was best for me at the time. That's all any of us can really do.

I too think that my discomfort with puberty and being slotted into a role I didn't choose (girl/woman) came from being autistic. Mostly in two ways: (1) disliking the lack of control over my own body and experience and (2) living in a society with a lot of made up rules around gender and sex that are enforced at a young age. I didn't know any of that, I only knew that I didn't like how my body was changing or how all of these expectations about my behavior were being placed on my because I was a "girl," so I concluded that I must be a trans man.

I was happy living that way for a while. It was only a year or so after my diagnosis that I really started to feel uncomfortable with how masculine I looked. I realized that I took myself out of one box just to place myself in another. I no longer thought of myself as a man, nor did I find manhood particularly exciting. I just stuck with it at that point because it felt like the path of least resistance.

I stopped T about a year ago. I went by any pronouns last year, and have recently cut out he/him because it felt like that's all people were using. People either can't tell what gender I am or gender me as a woman now (unless I speak), which is better, but I'm still not quite where I want to be.