Well, I came home for lunch. The humidity was up to 75% and temp is staying stable at 101. But no more replies to my chirping. I got off work just now, still silent, humidity is down to 68% but temp is still stable. I realized though that that the thermometer was going to make it harder for them to hatch (it was sprawled across the tops of the eggs) so veerrrryyy carefully used a paintbrust stuck through a vent hole to nudge it off. My temp readings will no longer be properly accurate but better than a large flat plastic thing blocking the chicks from hatching. It's tough enough getting out of that shell. I'm hoping the peeper from earlier is just sleeping.