It's not super hard, but due to the number of chapters you have to read, it just takes a lot of time to study for it. It's a good idea to not get behind. (but we all procrastinate)
However, at least during your first year, you will not have too many classes at once, so you will have plenty of time to study for the exam.
D2 year will be a little different with multiple exams crammed into single week.