@Ryan-and-Amber1
There is no solution for this. A guest looking for 3 nights on Airbnb will never be presented a listing having a min. stay for 7 nights set.
Or maybe use 1 fixed check-in day in a week and set listing to 3 nights minimum.
Then the next reservation will always start at least 7 nights after the previous one started.
Or block remaining nights manually on the calender after each reservation.