I put a 1 liter soda type bottle with a chicken nipple in it so my broody has water at the nest, no need to get up to hydrate. She gets up to eat & dust bathe about once a day, although I feed her little treats at the nest in the morning (cherry sans pit today, a few blueberries yesterday). Make sure she has food and water close by so she can access it easily is my best advice.
X2..
Mama hen can have a small dish of chick food in the nest box with her also. Just tuck it within easy reach.