I finished mine in 5 semesters BUT I scored so low on the math portion of my compass that I had to start at MAT55 then progress through 65, 85, then the 150 which was the only one I had to have for the program, I just had to work my way up to it. And my last semester before starting the program was also only for 1 class. My advisor also had me doing like 3 classes I didn't even need for the ADN program. If you don't need the supplemental math then you should certainly be able to do you prereq's in that time. I will have 4 1/2 years in my ADN!!