Unmotivated/stressed

Lately I can't seem to find motivation to do homework or even go to school. I've started to hate Art when I used to love it, and I dropped legal studies which I regret but I don't think I'm good at it. I have trouble waking up for school which makes me miss a lot of days, and I'm scared for year 12 because what if I can't study enough and my end of year score is too low. Need help please