Sometimes when I am hatching eggs I will add them to the incubator over a 3 day period. But they all go into lockdown together 3 days before the first ones are due to hatch. I've not had any problems because of it.I know the general rule to put eggs on lock down 3days before hatching. Is it ok to do it at 4 or 5 day befor hatching? Any experience doing this?