Hello! You sound like me, I've got a 7 year old, non verbal, incontinent, can't get him to toilet train, bowel issues, in a base within mainstream, got a neurotypical 4 year old who is polar opposite, wants to socialise, do everything, talk to everybody and trying to manage them is madness!
Also thanks @mumofoneAloneandwell for this thread, will follow with interest.
I'm up north in Scotland so provision is different, but any tips for the upcoming Easter holidays will be gratefully received. We don't get after school allowance as they won't take ASN kids (or SEN as you call them in England). V frustrating and means I'm buying annual leave at work and trying to juggle it all.
Edit: also meant to add that sadly my 7 year old has started being violent to himself, hits himself, punches himself, screams, cries if things change or we ask him to do anything. It's like walking on eggshells constantly. Happened on a car journey recently the four of us and our 4 year old was cowering in his seat and told me he was scared, I felt awful. We couldn't stop it. I wish I knew what to do or say. School are being supportive but it's a rough one right now.