Do you mean why on the calendar of your listing, the date are open for the next 12 months ?
if yes, it is because this is the option you have selected in your add.
to change it, go in your add, in parameters, then calandar, then calendar parameters. It should be called something like calendar availability… I’m not sure if the exact wording as my app is in French.
Actually I was referring to the availability seen when a search is done. As I search my listing (and others), the availability button shows “Feb 2023” even though I have dates available this month. This has only shown up since the new release