Need advice for my first playthrough

I've just finished my first Full-Moon boss and am really enjoying the game so far. The problem is, I don't want to miss any side stories or social links due to mismanaged time. I used a calendar guide to ensure I wouldn't miss anything for my first month, but I feel as though this seriously diminishes the gameplay experience. I'd like to enjoy meeting the new social links and grow my skills organically instead of marking them off as items on a to-do list.

Is there any way to guarantee I complete nearly everything this game has to offer without using a daily activity guide? Or is that just not how the game was meant to be experienced the first time around? Unfortunately, I likely won't have time for multiple playthroughs.