One of my chicks hatched but has it's cord still attached to the egg. I hadn't seen it before so I waited. It's been abot 3-4 hours and it's still attached. The humidity dropped to 65%. Should I add water to my Hovabator or just sit tight? This is day 20. Two chicks hatched early, probably due to temp. I feel bad seeing it drag it's little egg around. Thanks for any help!