I think it's importance to realise that there is a wider spectrum of disorders related to weight which doesn't neatly fit within ED, and can present with over-exercising rather than preoccupation with body image as such. I guess right now it's important to focus on your own health, since low blood pressure and pulse can be quite serious. However it sounds like you are finding CAHMS helpful, which is good, and trying to find ways of coping with the restlessness seems like a good plan.