My homie, you can be an ally the same way us cishetero folks can. You just support trans folks however and whenever you can. How you choose to self label is 100% independent of that, even when that self label is no label at all.
Just don't use the pronoun labeling at all, you'll be fine. I don't think I've run across anything where you're required to have it. There might be, but I haven't run across it.
Your self, your sense of identity is just as valid as anyone else's.