This is my first time hatching eggs I really don't want them to die, my hens are hatching the eggs and it is now day 21, I can't control the temperature or the humidity levels. I've got 2 eggs where the chicks broke about 60% of the egg shell but not the membrane, I'm afraid that it will dry and they will die. They started pipping around 5 am today and it is now 5 pm. What do I do? Do I help them or leave them be?