I understand you completely. I feel whiny whenever I get upset over (small things) being treated like I'm still a girl by people who seem to accept me as trans.
I don't know much about your situation (if you pass, etc.) so disregard what I'm saying if it doesn't apply. I'm under the assumption that you most likely pass and are out, but without HRT, and your gender marker/name, etc. isn't changed yet.
It's unfortunate, but from what it seems, that won't stop unless you are around lovely people, or pass 100% of the time in every aspect. I wouldn't say you have to be stealth for people to treat you like a "normal guy," just that it will take time and passing (literally. Passing as in looking like a guy. Not time passing. Pun totally intended, though).
As I said, it's rough, but you'll get through it as time goes on. I apologize for not having better advice. Good luck with your treatment.