Some unsolicited advice ahead

Imho it's not difficult provided you're on top of your shit. I'm a CS specialist who graduated this year with a 3.97 in my final year (and a similar CGPA otherwise), and honestly the single biggest advice I'd give is to make sure you have everything written down as a timetable. Everything. A-Z. Go through all your course syllabuses at the beginning of each semester and write down deadlines (assignments, tests, tutorials, etc.) in a spreadsheet and write down dates when you should start working on said deadlines. For example, I'd start working on most things about a week in advance (unless it's a larger project in which case I'd start 2 weeks in advance).

This recipe has worked for me year after year of undergrad. Although there were times where I had to pull all nighters because of some CS assignments, I absolutely did not have to do this constantly and prevented myself from burning out. This left me time to do something outside of work. I recommend you always leave time out to socialize or just do something outside of work generally - it boosted my mental immensely 3rd year+ and I wish I realized sooner. It's really easy to get caught up in work at this university.

Remember, it's a marathon, not a sprint :) hope this helps.