Lately I've been having the same problem. I'll get an idea for a new manuscript and as soon as I flesh it out, another one hits. Getting ideas is great. We couldn't write without them. But why do they have to come at the same time?
Last week, I fleshed out my plotting for a new YA novel and wrote 8,000 words of it. Then I had to stop to work on edits for my MG novel. I finished the edits and the manuscript is in the hands of 6 of my lovely CPs as we speak, so I thought I'd go back to working on my YA novel. Wrong. I woke up Sunday morning at 4am with another idea. An idea that I love.
The beginning of the book came to me so clearly, so I got up at 5:45 and starting writing it down. I had to because I didn't want to lose the MC's voice, which was so clear in my mind. And after writing that small section, I loved the idea even more.
So now the question remains, do I work on both novels at the same time, something I admit I'm not good at doing? Or do I let one novel take over and put the other aside?
What do you do when multiple ideas come at you at once?