I just found out I lost Friday and Saturday to work on the game, so mine will also be a lot shorter than intended. I think the idea is to finish the game and then build onto if you end up having more time.
I probably won't really finish my game in time. Not with every part I want put in. So I'll do the minimum needed for the game to work in a first time, then add things until I have to submit it. But I will probably keep working on it for a little while to really finish it.