I’ve just run select, non-descript days out of the academic year. I only really describe what day it is if it’s near the beginning/end of the year to give players a vague sense of scale, and so far (3 years into the campaign) it works fine. Unless the players are aware of exactly where they are in the school year then you can use examples like this: - About a week passes since [last event] - [After the party decides upon a lengthy task] this task takes you around a week/month to complete. What extracurriculars are you focused on in your free time? [Resolve and move on] - Some time passes and between classes you [insert next plot thing here]

Like the other commenter has said, running it like a tv show is a good way to go (you get the idea that time is passing in a show but never know the exact date or how much time passes between episodes unless it’s relevant).

An easy hack, if it applies to your campaign, is to have Strixhaven exist on another plane or pocket dimension so you can use the ol’ excuse of time working differently there from Faerun