I've not written any prose since the Rogues short story...
We've spent a bit of time plotting though. One sentence summary is done, two page (1k word) summary is done, now we're working on the beat sheet. Technically speaking we could start writing straight away - we have the first three or four chapters completed in the beat sheet (roughly 12-15k words) - but with just over half of the rest of it not defined to that level of detail it doesn't feel ready yet. Too much potential for major structural changes at this point
So instead I've been reading, playing a couple of games, and we've been working out the logistics of shifting to the Dymaxion sleep cycle