Ok so I'm just finishing my second week of half term and I am going back to school on Monday

But I'm currently going to sleep at like 3:00 - 3:00AM and waking at about 12PM - 1PM. My summer holidays messed up my pattern but as I went back to school it got better. I have NO idea how I'm going to wake up at 6AM on Monday morning! =/
I have 3 days left. What do I do?
hugo