He's threatened to take me to court

[Isthisnormalorisitme]

Carrying on from previous deleted thread
Soon to be ex p has now said he will fight everything to get full custody of son. Son has said to him that's what he wants, feeling sick

Mediation is usually not enforced when domestic abuse is part of the story. That said, you can attend a MIAM. They may be prepared to mediate between you without being in the same room, if you feel that it might be helpful.