Is DS on ADHD medication?
Is he receiving any support for his anxiety?
What support is the school providing? What have they already tried that hasn’t worked? Are they dealing with the bullying?
Have the suspensions been proper formal suspensions with the correct paperwork? Did the school follow the correct procedures? And I hope the school hasn’t just suspended because they can’t meet DS’s SEN? What support did they try before resorting to suspension? Have you challenged any of the suspensions?
Why is DS going to be on a part-time timetable? Hope the school is not using this as a way to manage behaviour.
Have you met with the SENCO.
Request an EHCNA now. On their website, IPSEA has a model letter you can use.
Personally, I wouldn’t look to move schools now. Some LAs sometimes use recent school moves as an unlawful reason to refuse to assess or issue an EHCP. With the line DC need time to settle. It is unlawful and you would be able to challenge the decision but personally I would avoid a situation where it could be used as a reason.
Also, friendships change a lot when DC move school. There’s no guarantee it would be how it was before.