Fun game, cool concept. Would love to see more to this project. Lots of really interesting things you can do with this idea!
its one of the hardest aspects with game jams. A really good way to milestone your work is to choose what playable state you want your game in each day. At the end of each day, consider how you could reduce scope to get more in development. We had to cut at times from this project, but worked together to keep ourselves on track :)