I know that any sort of diagnosis does not make the issues any better just by putting a label on it. But I hope it could help us to understand some things, or to search in other areas for some of our issues.
Why am I writing in the DID forum about it?
They sent me a huge stack of forms I have to fill out and I realized that quite a lot of questions would have different answers depending on which one of us would fill it out.
Also our mother had to fill out a form and of course she did write about the part of us, which she experienced in our childhood and adolescence most of the time, and which is not me, but our "I act as normal and unobtrusive as possible part to avoid punishment."
I am not sure if I should just fill if out from my perspective, because it is mainly me who whant's to check out if I am right with this suspicion, or if I should explain how we experience multiplicity and that it is different for other parts. Probably I should do the latter, because it might influence a diagnosis.
But i also fear of not been taken seriously, because so far most "professionals" didn't take us seriously when we talked about dissociative identity experiences.
It is additionally still difficult for me to talk about it like it is a "real thing" because all the doubt that is coming up like every other day (which seems quite stupid, considering writing here about parts all the time

Did any of you experienced a similar situation and how did you handle this?
It is not only about Autism. We would have the same issues with filling out assessment forms if we tried to get a diagnosis for Autumns psychotic behavior. Or depression and anxiety for some of us.