I don't think that you could fool a professional that knows a lot about AS into giving you a false dx based on acting. There's so many little things that NTs do that is apart of their nature that someone with AS would not do, and vice versa. One can't hide such intrinsic instinct, no matter how hard you try. Body language, and nonverbal cues are give, and take. They're a dance between two people. Acting can only take one so far into a dance that's ever changing. The few moves that those with AS have learned can get them through a some situations, but not one where a doctor is trying to trip you up.
Let me give you an example. About a month ago I was at a follow up appointment for my 6 year old son to be dx. The doctor was talking to me while holding the DSM in her hand. I was focusing intently on the paper, as she was explaining to me which categories he met. In the middle of a sentence she pulled the paper up towards her, and stopped talking. I went home, and thought about this awkward pause. because I know from experience that when someone makes a long pause like that in a conversation it is because they expect me to do or say something. I realized that she was seeing if I would look up at her face to get a clue to why she had stopped talking. I didn't. I looked at her shoes. ( I was enthralled with her shoes, as they were odd, and I had never seen any like that before) I waited for her to resume speaking again. I think a NT would not be able to help themselves from automatically looking for the body language that would explain her pause. It's instinct for them.