im sure this is bad advice, but i would state you have a disabling condition as part of the application process and not bring it up during the course of an interview. something about bringing it up seems forced. you do want to declare in case you need reasonable accommodations, and you can certainly talk about your strengths as an autistic person, but bringing it up seems to identify it as a 'thing', at least im guessing thats what it would do for NTs. further though, do you have concerns about your functionality in a work environment? or at least the work environments for which youve interviewed? what type of work have you enjoyed before?