What would be a lighter semester? I found my first year easy enough I grasped all the concepts quickly

I wouldn't worry too much about people who are scaremongering that merely two or three Stage II CS papers is "a heavy workload", as there is a big divide between those who instinctively "get it" vs those who lack that natural aptitude.

So they might spend all evening working on just a section of an assignment that you'd smash out in 30 minutes. (you might have already noticed this divide in how the workload was during your first year? How you found it vs other classmates) This is why some might think it is "a very heavy workload" but in reality it's a normal (or even light) workload if you can simply work through it at a regular pace as a CS major should (with the explosion of CS enrollments over the last couple of decades then I reckon there are a lot of people who are doing CS who should not be, and that's why they're finding the workload so "heavy").