As long as the eggs are not pipped there is no harm in opening the incubator to get the chicks out. I only say hands off if there are eggs in there pipped and hatching still. Usually day 22 is when I am satisfied the hatch is done. By then all that are going to hatch have hatched and the rest of the eggs are discarded. Since yours decided to make their debut early your hatch may be completely done by tomorrow.