Just wanted to put it out there for all the people who are apprehensive about choosing a uni course.
It's pretty common that the course you'll go into or the units you pick at the beginning might not be what you end up doing later down the line.
Anecdotally, my sister has changed her course three times this year and has settled on one she loves. I started this year in a science and arts double degree and now I intend to only graduate with a single degree in science. I've failed a unit that has really made me think about what I want to pursue.
I highly suspect that if you get a random sample of uni students, at least one of them will tell you that the course they chose in Year 12 is different from what they are pursuing now.
The other thing is that you can still get to where you want to go, no matter what your ATAR is. We have a pretty good system for the most part, where you can do pathway courses if your ATAR or study scores fall short of the entry requirements for a course.
Uni is a time to grow and find yourself. From being in your late teens as a high school student to finishing a bachelor degree in your 20s or beyond that, a lot can change. You gain a lot of freedom and independence. Gone are the days where you spend six hours a day, five days a week in a classroom with not so self-directed learning. It might be a bit of an adjustment, and it might take a while to find your feet. Know that it's okay to not have it all figured out.
Go smash out those exams and take care of yourselves in the process of preparing for them. However the exams go, we will be right here with you 🙂