One of my dc has severe anxiety, elder sibling has ASD and this dc has some traits, so I suspect not fully ND.
He has had serious school refusal issues for the past 18months, which through very careful handling have just begun to smooth out.
I have learned from years of trial and error that he responds well to positive parenting, involving him in decisions, explaining why when he can't get what he wants, natural consequences, allowing him to have control over things which he can age appropriately control.
Ex has always been authoritarian, he had a period of no contact for over a year and for the last year he has seen the dc once a month (court ordered). He was ordered to do a parenting course and this appears to have made him even more authoritarian. He thinks the way to help with the anxiety is to be super strict and dictate everything and not allow the dc to choose anything. I am left to deal with the consequences when he has been like this in phone contact, and to take phone calls from upset dc wanting to come home from contact because 'dad is mean'. On the last such phone call I heard ex saying to dc, in a shop so in public, that if he didn't stop making a fuss he would smack him. Dc is 10. Ex didn't smack him but the threat certainly didn't help anything. He used to smack them when we were together but since the cafcass involvement I think he has realised he can't do that.
I am guessing there is nothing I can do but continue to do what I know works at my end and pick up the pieces when dc are upset by exs behaviour?