I'm being as supportive as I can possibly be (praising all his hard work with revision, providing a quiet place for him to revise in, taking him snacks, making sure he has free time to relax, paying for a tutor once a week with the subject he's struggling with the most, being in contact with his teachers asking for revising strategies, telling him I believe in him etc) but his constant 'well I'm going to fail everything anyway' attitude is starting to grate.
He's not very academic and has struggled in lots of subjects for a long time now but I feel he's basically given up before he's even taken his first GCSE!!!
Any advice?