Cannabis isn't a treatment for autism itself but sometimes gets talked about...

https://smoothdecorator.com/dravet-syndrome-cbd-and-clobazam-in-the-uk-who-qualifies-under-nice-guidance/

Cannabis isn't a treatment for autism itself but sometimes gets talked about for related symptoms like anxiety or sleep issues. NICE guidance advises caution, especially for under-18s, and stresses that only specialists should prescribe it