Nice to see you MrSlant! You might remember I got separated/divorced right at the start of DS2's transition to secondary. Wasn't good timing but couldn't be helped. Don't blame yourself for any disasters, it's just how it goes with ASD sometimes. (There's always contemporary dance!)
There is more than one way to skin a cat. If A levels turn out to be a mistake you can always change to a more vocational course. Two friends' DS's have done college courses, BTECs and the like, one transferred to Sports after doing poorly in AS levels, one in public service training, both are going to university, sports science and criminology respectively. TBH, to do well at A level you need at least a B and preferably an A in the subject. For DS, who is most likely to get Cs with a sprinkling of Bs and Ds, A levels wasn't a good option.
DS seems quite calm, but I think he's got a very good chance of meeting his requirements for the BTEC course, especially as they seem to have dropped slightly. So, sort of looking forward to Thurs, will be glad to get this uncertainty over and done with.