"How to wake yourself up... well, it's one of those things, like 'how do I fall asleep?' It's not something you really know how to do. You just... do it, you know?"

He keeps illuminating his empty notes. There's a really fascinating portrait of Mother Nyx on the wall he wants to capture. Somehow, no matter what angle he looks at it, the eyes never look toward him. Psychologically devastating, the Master will be sure to love the idea if they can figure out how to replicate it.

"Usually I'd be able to wake you up, but..." He shrugs. "Can't. This sure is a weird one, huh? I can't pop in and out. This must be what it's like for mortals when they sleep."

So, sorry bro, you are actually trapped. Hypnos has yet to pick up on how much that is affecting his brother.