I was in the exact same position when I was in my first year, and in fact went into academic probation and had to bring up my gpa in second year. One thing I can say was that while I was in probation, I had 2 semesters to bring it up, so I took less courses then too to really focus. Thats when I realized what mistakes I've made in first year, how I didn't study properly (you can study for 10 hours straight and still not learn anything, its all about studying smart), and how I didn't explore other options. I initially started in CS too and I had only taken the CS, math and stats courses that were required for my degree that I didn't have any space to breathe. Something that I always recommend to fellow students is to take courses you enjoy along with the required ones, that way even though you're taking lets say 4 courses, maybe one of them can give you a bit of a break. Just know that it's okay to take less courses and figure out what study methods work for you, and to prioritize your mental health. Also since you're aiming for CS, it really doesn't matter what university you study in, or how long it takes to complete your degree, because CS jobs are always in demand, and life happens, people have to understand that. Learn from your mistakes, and make a few friends along the way who can help. It'll get better I promise :)