The ducklings that were a week behind my other 2 started hatching yesterday and while I was gone made its way half out of the shell. We were all excited while watching it until my daughter noticed that the yolk sac is still outside of the duckling. I don't remember where I saw this but I got a wet rag and wrapped the duck and the egg in an upright position in a little cup and placed it back in incubator. Is that what I do???