Maybe once or twice a week, if even. I'm pretty much off my Touhou kick for now, and I've moved on to other games for a while. And once I get bored with those, chances are I'll come right back to Touhou like I have many times before.
I think it's more or less because I know that I can accomplish anything I want to, Touhou-wise, if I so wish to sink the time into it. I'll come back to it sometime and finish where I left off.