I’m surprised your teachers would defer you away, but I think it is best to try to come up with a study schedule. Make a list of the most important tasks you need to do, then handle them in the order they need to.
See the Time Quadrant model in Sean Covey’s 7 Habits of Highly Effective Teens, Habit #3 for more tips. He says, “Have you ever packed a suitcase and noticed how much more you can fit inside when you neatly fold and organize your clothes instead of just throwing them in? The same goes for your life. The better you organize yourself, the more you’ll be able to pack in – more time for family and friends, more time for school, more time for yourself, more time for your first things.”
Teaching In Real Life 