There's no rule that says you can't work out of order, so first let me say that this is COMPLETELY FINE and ALLOWED BY THE RULES.

But I did want you to know that the point of having a premise revision on Day 31 is that, after spending the 29 days between these assignments fleshing out your outline, developing characters, defining settings, throwing complications and literary devices at your characters, etc. etc., chances are moderate-to-high that your premise may change shape a little - or a lot - and that's okay. Day 31 is there to give Preppers permission to vastly change the parameters of their stories over the course of the month.

So if you get to Day 30 and start thinking maybe your initial premise isn't where the story is trying to land, consider revising it again. Give yourself permission to change everything.

Cheers,
Michelle