How do I become stealth

I’m 16 and a trans male. I’m starting college in September (so a while from now but still) and I wanna try and be stealth. Hopefully gonna be on T by then and will have a better sense of style and a better haircut due to no longer having to wear a uniform, plus the fact I already pass somewhat decently if I don’t speak. Is there anything I should avoid wearing/doing/etc to avoid getting clocked as trans? Anyone have any general advice on being stealth?