Last summer BOTH of my Buff Orpington hens went broody, about 3 weeks apart. I kept them separate from the rest of the flock, and got some fertile eggs for them to sit on from my neighbor. Both did not eat or drink (or poop) almost the whole time. I kept food & water available, right next to them, and figured that when they got hungry/thirsty they would take care of themselves. Still i thought they'd starve but were just fine! they seemed to lose a little weight, but they took the job of sitting VERY SERIOUSLY! Anyway, all went well, i had 14 chicks hatch from the 2 of them and now my 'chicks' are just starting to lay! Don't worry, if you make food/water available they'll take care of themselves just fine. You're doing great! Hope you get some chicks too! (just don't count your chicks before they're hatched, as the old saying accurately goes - i had some eggs that never hatched & threw them out).