Blimey, a chance would be a fine thing in the UK! It’s shameful but there really is not much out there especially for teens. Certainly no talking treatments or coaching that I have found. Schools are under pressure to get results and their budgets have cut so they can’t offer much. To give you an idea despite his diagnosis he has no access to child mental health services at all despite being out of school for nearly a year. He does not meet the criteria.
We did do the diet exercise fish oils at home for a while but he just refuses to cooperate with any of that now….