Well, everyone says don't open the incubator, you'll compromise your hatch. Honestly, I open mine during the hatch all the time. I have a 98% hatch rate on chicks and that's because they die before I even move them to the hatcher. I would pull the egg out as fast as you can, clear area for it to breath and shove it back in there. If I fool around too much and the humidity goes way down I'll spray the sides and bottom of the incubator with warm water to get it back up. I use a little giant as my hatcher.