Hello,
Like the others said, it depends on you workload. From my experience, I found that A-levels were tougher than university because in university the classes were more spread out.
Also, in college I had a lot of exams that were quite frequent. In university, we only have final exams towards the end of the year, but we had papers due throughout. I found that better to manage my time as I would schedule days to have fun and days to study (when it suits me).
My main tip to manage workload in university is to have a to do list and try to be organised as that will help you achieve your goals.
Best of luck,
Haya - MBBS V