education- Representation of autsim in childrens literature

7,000 word dissertation that includes the introduction, literature review, methodology, 3 chapters and the conclusion.
It is a literature based dissertation based on autism and how autistic characters are represented in children’s books.
The main idea would be to talk about autism and its diagnosis process, linking this with how characters in children’s books show autistic traits. for example if looking at “my brother charlie” then it would mean to talk about how that characters autistic traits and cross referencing it with a different characters autistic traits from a different children’s book.
the three chapters would probably be based based on a certain theme and then discussing various book characters autistic traits similarities and differences.
example chapter themes could be Friendship?, emotions? Routines? Obsessions?