You can start out with fluids 15 ml per pound 2-3 times a day. But do a smaller amount initially, and see it she tolerates it. Once tolerating it, it can be done twice a day. But I would encourage her to eat on her own if possible. Exact baby bird feed is what most people use for feeding. You can try raw egg, yogurt through a small tube, but feed usually plugs up a small tube. @casportpony has a lot of experience with multiple articles on tubing. Some grind chicken feed into powder and add a lot of water right before the time you are ready to feed, but that needs to be done with a larger bore tube. As you know, watery chicken feed will keep becoming thicker as it sits, and more water may need to be added. So mixing it right before you need it is best.