I had 8 eggs in the incubator that started hatching 2 days ago. One first had pipped and made a decent enough sized hole that I could see its beak. I assumed that it would be the first to hatch, but it still isn't out. 4 hatched 2 nights ago, 2 hatched last night, 1 just hatched now. This little one still hasn't come out. I can hear it and see it moving around but I don't know how much time I should give it...should I try and chip away a little bit at the shell and see if that help at all, or give it a little more time?