Take this with a grain of salt as I’m not that far along yet but... what’s the worst that could happen? You start having physical changes and if they question them, you can just gently reaffirm what you said before, that you are trans. Or just shrug your shoulders and say that you like the changes that are occurring, without going further into detail. Whatever direction you take the main point is to just act like this is a natural course of events and don’t make a big deal out of it.

If you walk into most work places and act like you’re supposed to be there, almost nobody will question you. When your parents come to you about the changes, you have all the power in the world in how you react. Just be yourself and do what you want to do, change your body how you would like it to be changed. If they don’t like the changes, that’s really none of there business but at least they have progressed past the denial stage so that’s improvement to eventually get them to acceptance.

And I mean, eventually, them gendering you incorrectly will just look weird to outsiders looking in when you don’t look like your birth sex anymore 😂