Query: Lee actually did manage to do a monthly comic for, like, ten years, didn't he? It wasn't until he got the idea into his head that "managing a business" wouldn't cut into his time that he started dropping deadlines, right?
From his wikipedia bibliography, I can't find any title he's been on for over a year since 1992, when he hopped off X-Men. He drew Uncanny X-Men for almost a year uninterrupted and then he did the first year of the second X-Men title uninterrupted.