Nephew is 15, y11, he hasn't done a full week at school this academic year with having one day off a week or attending one day and having the rest of the week off, he attended 4 days last week, had the Friday off and has so far had the whole of this week off, his parents don't seem to care, in their defence he did skip school Monday and Tuesday but yesterday he said he didn't want to go for no particular reason, and the same today. When he doesn't go he just stays in bed on his devices (which I wouldn't allow but I'm not his parent!).
Today, I'm going to take DD to a trampoline park, as she only attends nursery a few days a week and she's off today, his mum has asked if I can take him along as he'd enjoy it, I've said no as he should be at school and that'd be rewarding him for not attending and its half term soon so he can go then. BIL spoke to DH and DH has said I'm BU as I know nephew struggles with his anxiety which is probably why he isn't going, I disagree as yes I understand he has anxiety but I think he isn't going as he finds staying at home more fun.
AIBU?