Read over lecture notes again while they are still fresh in your mind. Start projects while your memory of the assignment is still accurate. Provide for spaced review. This is a regular, weekly period when you will review the work in each of your courses and be sure you are current. Plan a schedule of balanced activities.
College life has many aspects which are very important to success.
Utilize odd hours during the day for studying. The scattered one or two hour free periods between classes are easily wasted. Plan for and establish habits of using free time to study for the class you just finished or to which you're getting ready to go will result in free time for recreation or activities at other times during the week. Trade time, don't steal it. When unexpected events arise that take up the time you had planned to study, decide immediately where you can find other study time and adjust your schedule accordingly.