Good luck with your exams!
That said, I too am disappointed with how this story is progressing. This story started with a mysterious notebook, hinted at there being a secret behind it which he later discovered. Showed how he viewed, or perhaps influenced, events through that notebook when attaining experience. And then suddenly, it's never spoken of again.
And it's the notebook and whatever secrets it holds that intrigued me the most. Now it just feels like a slice-of-life where the notebook serves as a plot-armor gimmick to prevent him from ever failing at anything. I'll probably just skim through the chapters in a few months, see if it went anywhere but I'm not hopeful.