I am fixing to write a story about a semiverbal level 2/3 autistic 12-year-old because this is a very underrepresented group, especially in the autistic community. I don't want it to be an overly sugarcoated story nor do I want it to be a dim outlook on higher needs autistics. The point of making this character high support needs autistic is to support the theme that disability isn't always quirky, marketable, or easy-to-swallow, and despite that, everyone deserves happiness and support. This is more of the theme rather than a plot.
Unfortunately, I haven't been able to find very much information about how level 3 autism affects the individual, just on how it affects people around them. After a lot of digging, I did manage to find a few blogs written by Lv3 autistic people, but I feel like I still don't fully comprehend how it feels to be Lv3 autistic.
So, to my question, is the lack of proper representation because it's such a difficult subject to write about properly and respectfully? I am autistic myself and finding good representation is very hard. I don't have any personal experience with higher support needs autism. I do have some days where I am 'low-functioning' but I don't feel as these really give me experience about what it feels like to be like that all the time (or even if that's what it feels like to Lv3 autistic).
So, should I just choose something else? I do have some backup ideas that I think I could write easier, but I was hoping for some consensus from others if writing from the perspective of a higher support needs autistic correctly is possible because I feel like it drives the point better+represents an often neglected community.