Kelly,

With the class load you have planned, be prepared to drop more than just one class. I was a 4.0 student and never needed to develop good study habits to achieve good grades. The cognitive struggles I had in college were magnified by the hard science class load. Physics, zoo, math ( I forget which, likely finite math or trig), challenged my ability to both study to memorize and to process multi-step formulas, etc. I had to cut my class load in half.

If you need Ritalin to combat the fatigue, you are likely not ready for such intensity. The fatigue is your body telling you to take it easier.

My best to you.