Sorry I am new to hatching so lots of questions. On day 21 first chick pipped but died before hatching. On day 22 chick #2 (who also pipped on day 21) hatched but died. Chick #3 quickly pipped and hatched and is doing very well, but today on day 23 still does not look fluffy. No other pips, movement or sound from the remaining 16 eggs. Any hope left? How long should I wait?