Should I quit?

I am currently in my first semester of nursing school, and I feel like I'm drowning! I was always a pretty decent student and didn't have to study at all, really. I recieved an associates degree in biology in 2008, and went a year to a university to continue working on my bachelor's degree in biology. Thing is, I couldn't live on campus, so I drove, everyday, an hour and a half- both ways (total of 3 hours a day driving), for five days a week. Needless to say, not a lot of studying got done and I burnt out pretty quickly (I only made it two semesters). So, I went back to the community college that I had previously attended and got accepted to the nursing program... But, it's slowly killing me! We only have one class, a nine credit hour Fundamentals of Nursing Practice class, and I'm barely pulling a C, but not even a C that's high enough to count (we have to have a 76% or it doesn't count)!

I know this is probably on the short list for what any of you care about, but any suggestions that and of you have (especially any second year students ) would be greatly appreciated.

Oh, and I'm doing great in clinicals and lab, but lecture is kicking my butt. You see, on the first test, I had a 62%, and then an 80% on my second. But, the units were taught by different instructors, and as much as it pains me to say, the harder teacher clicked better with me.

Serously, any help would be greatly appreciated...

Thanks