You think you're doing a pretty good job, actually. You've been giving Davey his space, you haven't been up in his business. You showed him his computer, gave him the password to his Pesterchum account, but haven't bothered him about who he's talking to (though you hope he's been talking to John, Jade, and Rose, at least a little).
You've tried asking him to strife, but he feels more comfortable with Strife himself. You haven't been bugging him as much.
Whenever you think of him never remembering you for real again, something clutches in your heart and for a few minutes you think you might just die, but then you take a deep breath and go on with what you're doing.
You've resigned yourself for the most part to the idea that he's never going to remember you without his head pounding and his stomach becoming upset.
He'll be okay. You'll be okay, eventually.