Hopefully you will move the feed so she can not reach it at least during her last 3 days because she Will have to Do One Of 2 things----either leave the nest to poop which can cause her eggs that are pipping/hatching to dry out or she will poop in the nest----a major mess if the chicks get into it.
Yep, I plan to move it out of the nest box in the morning after I let the rest of the flock out and close down the roosting coop for the day. Does she need the food in the box with her during lock down? I have read several places where it says to leave food and water in the nesting box for her during lock down as she will not leave the nest. This is new advice as far as I am concerned. Want to do what is right for her.