What I hated most about school was that it made me stop reading for pleasure. I'm an avid reader, but during high school and college, I rarely touched a book for myself, except over breaks.
I started studying tarot during my third year of college, and it provided a new way to bring "reading" back into my life. Rather than commit (or not) to a full novel, I could read a card for 5 minutes a day and not feel guilty about taking time from my school studies.
Of course, if you're used to reading tarot for hours or more each day, five minutes is going to seem like a major withdrawal. You'll just have to accept that your situation is different now and your priorities have changed. Change is a valuable part of life, and it's easier if you accept the changes and work with them. You can't spend a lot of time on tarot now, but maybe you'll be able to again in the future. (Even though winter break seems like forever from now, it really is just around the corner!)
If tarot is really that important to you, you'll find a way to fit it in someway, somewhere, somewhen (okay, made that last one up). Rejoice in the 5-10 minutes you give yourself as if it were a nice warm bubble bath. It's not ONLY five minutes. You GET TO SPEND five minutes with tarot!! Outlook is everything.
Or you could just drop out of school. Who needs college anyway?