I am new to hatching. I have 10 tolbunt Polish frizzles in my little giant 10200 incubator. Last Friday was day 21. Yesterday (day 22) there was an egg rocking pretty well. Today not nearly as much. How long till I give up? Or is there anything I can do? These were shipped to me and 3 broke. So it wasn't easy getting here. I also believe my thermostat may have been off by a degree or two throughout most of the incubation process. Feeling hopeless. Please help!