I don’t. My instinct would be to stay away from too precise a plan. Having a project plan for what is being published where is a good habit, but too precise of a plan lures us into execution mode. I would say keep your eyes open for opportunities to promote the core content 2 months after you’re absolutely sick of talking about it. Also, if other people are still talking/writing/linking to what you created…then you should be too.
We discovered that several months after we were done with the campaign, the growth benchmark was STILL getting a ton of attention, so we ramped things back up. For example, we did a webinar over a year after its release that largely focused on the research in the report (along with other content that was new), it was extremely well-attended, then we wrote a blog post about the webinar (which was about the report), that got 4kish views in the first month it was out and attention from some really important influencers.
All that to say, I think my advice is this — as long as your derivative content is getting the results you want, keep doing it. When it stops getting the results you want, or you’ve exhausted all the avenues, or there’s higher return on effort somewhere else then it’s time to move on :)