Well, I did mean time between sleeping or recovering or other responsibilities, but yeah, I've been kind of slacking off since we got back. I got hit in the head. [He gives the side of his head a few little taps. But following Loki's request, he lifts his hands, summoning a puzzle into his palm seemingly from out of nowhere, transported from his apartment. He sets it down and, with a bit of focus (but less than it had taken the last time) solves it pretty quickly.]

Looks like it's true that repetition is a good way to learn something.