Definitely go for a smaller class load. I personally did a lot better the semesters I went for smaller class load than the ones where I overwhelmed myself. If possible, I also tried to schedule Fridays or Mondays off if I could to have a three day weekend to recover from the week, or I'd try to have more classes in the afternoon (I had trouble getting up early). Sometimes it wasn't possible, but when it was, it helped. Good luck!