Alexa, what day are you on now? More info needed. How are the air cells in your eggs? Are they appropriately sized to match the age of your eggs? Starting at day 14, the chick starts getting into position to hatch.
I do not use an automatic turner. I keep my eggs in cartons through day 14. Then I lay them flat and continue to hand turn for the remaining incubation days. IMO, opening the bator to hand turn is a non issue, b/c the temp does not drop long enough to even affect the temp of the egg. And Mama hen gets off her eggs on a daily basis. Some bator manufacturers now recognize that fact, and have built in a cool down cycle to mimic broody hen's daily constitutional!
So, if past day 14, you can take out your auto turner at any time and finish the incubation/hatching with the eggs flat.
Increasing humidity is entirely dependent on: air cell size AND developmental age of the chicklets.
If your air cells are still too small, I'd keep the bator dry until your first internal pip. If you can monitor closely, you could even wait till first external pip before quickly adding water. If your air cells are on target, you can increase your humidity at day 18 - 19. If your air cells are too large, you might want to increase humidity even a bit earlier.
