There is some really useful advice on making Ramadan and Eid more autism-friendly in this blog. The suggestions include creating social stories, ensuring a quiet room is available and improving autism-awareness and understanding amongst mosque attendees:
Are you aware of any similar initiatives within your local mosque? Or of any specific support for autistic people within the Muslim community in your area? Please do share your knowledge as we’d be very keen to let others know of any good practice happening.