I've got a hen sitting & 2 of the 3 eggs have hatched in past 4 days. The chicks were able to poke a tiny hole through but were too tired to peck to get out so my daughter decided to help them along by breaking the shell little by little over about an hour. Now it's been 2 days since last chick was born should we poke a hole in The last one? It's still very warm & our momma hen is still sitting on it. Just don't want it to die in there when we could help it. The shell is really hard. Thanks