For the benefit of anyone else trying to do this I’ll explain what I’ve found out.
The tool @Ann72 lists is correct. I definitely restricted the days that people are allowed to check in on. Unfortunately this doesn’t limit the days they can check out on, so for instance if someone books checking in on Sunday they could still end up booking a day that I should have blocked. You are able to set minimum night requirements by day but not maximum.
The only way I could safely limit my bookings is to have a minimum stay of 4 nights with check in only on Thursday and a maximum of 4 nights stay overall. This is what I’ve set for peak season as the condo will easily book. Unfortunately I don’t want to limit myself to this in off season where bookings that long will be harder to get.
I will manually have to block off days of the week in the off season.