Day #21, I've had 5/9 eggs pip today, but no zipping or hatching. I kept humidity low on this set of eggs during incubation, trying out dry incubation. Have kept humidity around 20-30% for days 1-19. For lockdown, have kept humidity around 65%. These eggs have been pipped since this morning. Have not opened lid. My last hatch, the first one to pip was shrink wrapped by the next morning (although still alive, I helped it, and now it's a good looking little chick). Just wondering if I should be worried about this. I know it can take a while to pip, zip and hatch.