@Francoiz0 If you don't want to "maintain" your calendar 222 days in the future, do what everyone else does and set your listing to be available only 3 or 6 months ahead at all times. AirBnB will open dates on a rolling basis, and everything beyond that will be unbookable. On the other hand, if you leave your calendar open into infinity, it's your responsibility to set your rates, etc.
Again, I suggest that you spend some time reading some of AirBnB's documentation. It's far from perfect, but there's still a ton of helpful information there. If you don't, you're leaving yourself open for a lot of other surprises.