I'm pretty sure that my DC isn't autistic. School are pretty insistent that feel they are.
Sleep has always been fine, although not sleeping until 10pm consistently but other DC is the same and NT as far as I'm aware. I thought it was just cultural as we eat later and go to bed later in general.
I have lots of good relationships with autistic people, including my bestie. It just doesn't seem like it's the right diagnosis for my DC.