Assuming you want to date
, you have until
to get your academics to Genius, which is actually plenty of time.
One tip for leveling up academics is during the week before exams, if you don't have any social links you can work on, you can go to that restaurant above the book store and buy the Prodigy Soup, and you'll get three points instead of the two you would get from studying in the library.
Also, you know the quiz game at the arcade levels up academics, right? You mentioned leveling up charm and courage there, but not academics, so I wasn't sure. And unless my memory is way off, you can also study after the quiz game.