If you ask your doctor for help, you will be able to get past that panicky withdrawal with some medication for a few days, most likely.
That said, I just quit without medical intervention. I didn't know it could have been dangerous. I survived. It was uncomfortable for several days with all the sweating and anxiety and panicky feelings and unable to sleep. That's kind of par for the course.
Bite the bullet and get it over with, then enjoy your college experience.