Many students feel it's not worth doing schoolwork between classes because they won't have time to complete it. If you've broken your homework and assignments into smaller chunks, though, you'll be able to complete one or two of them in that time. You may even find yourself with a free evening. Use your best time well. Some people are 'morning' people, so they should do as much work as possible early in the day.
Nighthawks are better to save their work until the evening, when they are most effective.
Don't put off until tomorrow what you can do today. Before the day is over, do one more thing that you were saving for 'tomorrow'. In time, you'll find that you aren't procrastinating as much. Moreover, your workload will be lighter. Turn off the television.