I have Marans eggs that I ordered online. One began hatching on the 20th day. Got a small hole opened and was cheeping for 48 hours. It is now day 3 and her activity decreased to almost nothing and the hole got no larger. I finally took a chance and helped by breaking out the end. She is out of the egg now for about 1 1/2 hours but not much movement. Her legs don't seem to have any movement either. Any advice?