I've made a good, solid start to the third book in my trilogy, and I don't want to lose momentum. The only problem is, something new showed up to the party, and it wants out. I started jotting down an opening scene a week ago, just so I wouldn't lose the idea, and I'm already 14k words in to the new unplanned thing.
I really REALLY want to work on this. But I also don't want to lose the good start to the other WIP, and have to get back into it later. Since they're very different from each other (UF vs Fantasy/ 3rd person multiple POV vs 1st person single POV), and I won't get them mixed up in my head, I was thinking of trying to work on them at the same time, something I've never tried before except with short stories/novels.
I was thinking, 1 week intensive with one, and 1 week with the other, alternating but giving each a solid chunk of time, with the 'off week' to marinate ideas while I work on the other thing.
Has anyone ever tried something like this before? Any other ideas of how to manage it?