Start candling the eggs daily to see if they have internally pipped. You don't want to turn the eggs after they have pipped into the air cell. Once they pip externally (shell pip) increase the humidity to 65% or so. I usually just put a wet wash cloth in the incubator then (folded in 4ths), it brings the humidity up to about the right level. If any seem to have trouble getting out of the shell I wrap them in the wash cloth.