Very anxious ASD 8year old after return to school

Hi all,

Was hoping to ask for your thoughts and wisdom on behalf of my boy.

We are in Scotland, so back to (mainstream) school for the second week. Perhaps not unsurprisingly he is highly anxious at the return to school

The anxiety seems focussed on unstructured times such as playtime and lunchtime. School have been understanding and he has a quiet space he can go to if he feels the need to.

He was well settled and happy before the break to homeschool, am hoping with time he will get used to the new routines( playground bubbles for example). Any other suggestions? He's very upset in the morning and in the evening and distressed by feeling anxious about everything. We can identify it is anxiety, as well as how bad out of 10 it is. We have tried various things such as having some strategies to try and help, but he just seems overwhelmed just now. Hopefully time will help, but anyone else got any ideas about how to help him? Any ASD specific strategies for anxiety? I have read CBT isn't always effective for example.

Thanks very much for reading!