Pretty simple. Be an emotionally insensitive jerk when you listen to girl's problems, easy enough with ASD, you may have an advantage there.
Tell her how you feel ASAP. Don't prolong things out, that's where friendzone comes from. If you have strong feelings for a girl, tell her right away, don't string along. Nowadays it's hard as nobody has actual feelings and it seems the exchange is more like "hey wanna f**k?" So anyway, sooner you reveal your true feelings/intentions the better. No use in prolonging the process, she will probably not grow to like you better.
Lastly, if you get acquaintance zoned, don't treat her much differently or be nicer to her than you would a male friend. If you know there's no chance with her and she calls you up and is like "hey let's go shopping at the mall with a bunch of people" when you'd rather, I dunno, take apart engines that day, then tell her "yeah I don't wanna and would rather take apart engines today." I mean some girls if you do share hobbies and interests (this is rare) can be good actual platonic friends, but think, if the conversations with her are something you'd totally not care about if she didn't have boobs, then maybe it's not worth your time to be "friends" as you'd not be friends with a male version of her, if that makes any sense.