Hello- today is day 20 since we put our eggs in the incubator and yesterday at 4pm I noticed 10 eggs were cracked. By 8pm there was very little if any progress but we can hear chirping. This morning (6am now) there are one or two with small holes where I can see movement and they are still chirping but nothing else has happened. Several of the eggs still only have the first crack with no progress at all. Is that normal? Did we do something wrong? We are using a incubator from the farm bureau that has a fan and we are keeping the temp at 100 like they told us to. There is a little water in the middle section still but we do not have anything to tell us what the humidity is and we were told to stop adding water when the first chick piped. Any suggestions? Thanks in advance!