My son is 21. ADHD and a bit of autism as well. Not bothered about Christmas at all. With presents he never knows what he wants and if I buy stuff that he’s not interested in it’s a total waste of money. He has suggested that I pay for his gym supplements and protein powder etc as it’s something he’d find useful and he wouldn’t have to spend his own money on it. Not very festive. Do I do it anyway as it’s what he’s asked for?