Depend on how main residents you have and what supplies/ machines your school provides for making door decs. At my school each hall has a cricut machine for us to use so we can get them done in about 2-4 hours. We also tend to work on bulliten board supplies and info through out the month so it’s not all at once
idk during our training week one of the seniors managed to get all of his door decs and bulletin boards done for the year (with the pre-stapled butcher paper just rolled up and kept in his dorm) so there’s definitely ways to make it go faster! you might have access to a cricut in your RA department so don’t hand cut them all if you can wait until then