LotC + Exam period don't mix. Go on a good month or 2 hiatus when exams come up. Apart from that I've never found the workload too stressful during the semester. Only downside to my lax attitude during the semester is the cramming at exams. But you do you. See what works.
Professors are a lot less interpersonal than teachers were. You need to reach out to them, even and especially when you don't like their class. Being that student that actually introduces themself to the professor and sees them during office hours will help you get an A!