Errrr, I have no idea lol I feel like I need to draw out a graphic organizer to get all that info straight in my head so I can only imagine what it must be like for you

I would advertise, I always advertise anyway, spots open or not because things can change just like that. Its best to have some families in mind if you do have availability come up. Sounds like your families are all experiencing some uncertain times so I wouldn't place any bets on them that's for sure. Look after you and your needs, because noone else will.