Because some specialized courses are not so heavy, there are not many courses, and some specialized courses are heavier. In addition, there are more classes in freshmen and juniors, and more classes in freshmen and sophomores. Junior year is bigger, and freshman year is smaller than sophomore year. There is basically no class in senior three. Some majors need to go out for internships. For example, I am a pharmacy major. When I was a freshman, I took many classes, but there were few related courses, most of which were public courses, which meant that everyone needed to study. Sophomore courses are the most, and the number of specialized courses is also relatively large, because at this time there is already a certain foundation to learn difficult specialized courses. The number of classes in junior year is less than that in freshman year, but the number of specialized courses has increased, because the professional-related foundation has been very solid at this time. There was only one course in the last semester of my senior year, and I will come out for internship next semester.
So it depends on whether there are many college courses, which ones are big, and how many courses are related to your major.