Idk how actionable this would be for you, it probably depends what specific articles of clothing and in what style you are expected to wear, but are you able to buy any stretch fabric sort of shirts?

I personally can’t wear “normal” non-stretch clothing because it’s far too restrictive for my own comfort (autist), and find that permanent press fabrics do a great job of being more forgiving, largely because of the stretch portion of the fabric blend that prevents wrinkles. There’s a surprising amount of women’s clothing that meets my stretch requirement, and still looks professional. But I do most of my shopping at thrift stores because my needs are super specific, so I can’t give you any brands or anything, I’m sorry.

That might be another community to ask, though - autistic folks often have specific clothing restrictions, for the sake of existing without that distraction, that might help you find something appropriate for your needs. :)