Yes, it is possible that there won’t be 4K in QEE for Fall 2020. I won’t know that until all the scholarships and aid packages show up.
My ex makes quite a bit more than me. He’s married with 2 young kids so gets quite a bit of child tax credit already, but I’m pretty sure he’d be able to use the $500 non-refundable one as well. We’re very amicable, so maybe I’ll just ask him to run his both ways to see before filing.