My H and I decided on 2-3-2... M-T, W-F, S&S and then it switches the next week so that whoever had W-F the week before, now has M-T & the weekend. We thought a week at a time might be too long. However, we will adjust if the kids want to try something different. When they are teens, I’m sure they will live where they want and for what amount of time anyway. Our kids are 11 so that will be in a couple of years.