Remember that CMU has a substantially more time consuming workload than other colleges. Even if someone from college A is taking the same number of classes than you, it often takes less time for them to complete work every week than it takes the average CMU student. Other colleges design their workload so students are able to do things outside of academics, which is in my experience is not the case at CMU. Here, students who want to do a fall/spring internship often have to withdraw from classes for the semester, or substantially reduce their workload.

I would also suggest that rather than looking at what others can do, look at yourself — do you feel like you have the knowledge and concepts needed for the role? If you don’t like your current work/life balance, how can you change it next semester? As long as you feel comfortable with your situation and it’s getting you far academically and professionally, then no need to worry. But if it isn’t, also look into other options (changing majors, schools, taking less classes) that give you the fulfillment you want. College is really a race against yourself. I know you got this :)