First time incubating eggs. I put these eggs in on November 29, so today would be day 15. The air cells look a little under developed to me, I had been running pretty high humidity at 72% and I let it run out. The incubator has no water in it at this point but it is still running a humidity of 30%. Should I let it run at 30% for a day to see how the air cells change or do the air cells look and I should add water in?