@Raymond360
As far as I know, you either have IB on or off for a listing. I have in the past also wanted to have it on just for certain dates, but I don't think it's possible.
For your particular issue, I think you might want to look at rule sets. You can block a date for check ins, without blocking it for bookings. I have done this frequently because I travel for work and do the turnovers and check ins myself.
So, I block the dates I am away for check ins, but guests can still book those dates if they are arriving before.