The National Autistic Society have provided information for parents as they prepare their child for the transition back to school.
You can view this at www.autism.org.uk/advice-and-guidance/topics/coronavirus/education-and-schools/guidance/a-guide-for-parents.
There are also other resources in the section at www.autism.org.uk/advice-and-guidance/topics/coronavirus/education-and-schools/guidance
If you are a teacher you may also want to see www.autism.org.uk/advice-and-guidance/topics/coronavirus/education-and-schools/guidance/a-guide-for-teachers