It's still sticking its beak out the hole and it looks like it's breathing through the beak. It's been 46 hours. The incubator was stable temperature-wise, but went down on its own, which id did the last two times I tried to hatch eggs, too. I turned it up and am keeping an eye on it. It's been 46 hours since that first crack in the shell.
You may have to quickly remove the egg so that the lid can stay closed, and carefully help to remove more of the shell where the beak is at. Then if there is any of that inner white skin under where the shell was at, dip your finger in a bit of warm water to help moisten it back up and then put the egg back in the incubator with the hole facing up.