"This isn't a new appreciation," Albus says, leaning forward to snatch his book back. "This is ... being well aware of what's to come in an already difficult class."

Yes.

He rolls his eyes affectionately.

"All right. So - um. What do you suggest, then?"

In other words, what could be more important than studying in preparation for what will undoubtedly be a huge Potions assignment to come on Monday?