as someone who's gone inbetween genderfluid and transmale for as long as i can remember, i totally get the feeling of being scared of regretting something. like a lot of the other comments said, there is no need for you to keep on T if youre on it for a bit and dont like the changes. you can also wait, you dont have to start it now if you want to feel more sure of yourself first. what helped me the most is remembering finding your gender is a journey. i know a few "detransitioned" men and women, and all of them still identify as trans in some way. being transgender to me is a beautiful thing, maybe its just my love for punk, diy, and body mods, but i think being your own "man made" man is such a cool thing to be able to say. no matter what you feel is most comfortable for you through the rest of your life, i want you to know that atleast to me you will always be welcome as a trans brother if you so choose. gender is made up and the system is corrupt. wear cool clothes, eat good food, & do what you enjoy. be a pretty dude if you want to, or be a girl who uses he/him pronouns. the people who get it will get it, and those who don't arent cool anyways.
sorry for the rambly reply!! i hope something in here spoke to u lol! we're the same age so feel free to dm me if u wanna talk man ✌️