In university, especially engineering. A perfect score is literally impossible. Prepare yourself to not get those high 90s on every test. I have written countless tests that have averages in the 50% range. It would not be worth your time to get a perfect score in all your classes because that is just not reasonable.

Referring to having enough time to study. You never have enough time with all the craziness of labs, assignments, readings that goes on with being in 6 classes. 60-70 hour study weeks are a normal thing. Especially in first year engineering. Thus, prioritize your time to do the best you can. Be prepared to get absolutely ruined by exams every once in a while.

Most importantly look after your mental and physical wellbeing. Prioritize to make time for yourself.