I had 4 ducks in an incubator & 1 hatched lastnite ( happy & healthy ) then 1 more hatched this evening around 5 & they other 2 pipped but then I noticed my humidity was down to 40%, tried to get it up & it won't go up now the temp is dropping to around 90, & I checked the 2 eggs they are shrink wrapped, I opened up there pip so there becks are out. What else can I do the duckling that hatched around 5 is still in the incubator drying, I keep misting the other 2 that haven't hatched yet. HELP....