I'm in the same boat as you... It's fun to get back and play a little. But it goes in spurts, and I can't seem to keep focused on my sax for more than a month at a time.
I just go between my DJ crap and the sax, that's not when I'm working on school stuff or working.=)
good luck! Like Sax Maniac said, "you'll probably never leave again" and yeah that's true. It's a great hobby, and its' great to have sitting around!