Duck eggs with different stages of incubation - when to stop turning

[quackkquack__]

Since I didn't get any responses on my other thread I decided to make a new one, sorry if I'm not supposed to do that but I really need answers ^^'

I put four call duck eggs in the incubator April 29th (at the same time) but they have different stages of incubation. Egg 4 and 7 are practically ready to hatch and I assume they will start hatching by tomorrow but eggs 6 and 8 aren't quite ready yet and I don't know when to stop turning them (they are on day 22)

The pictures aren't the best but here are what they look like:

Egg 4 (couldn't get any good pics of egg 7 but egg 7 looks the same as egg 4)


Egg 6


Egg 8


I plan on putting egg 4 and 7 in lockdown tomorrow but when should I stop turning egg 6 and 8 and when should I expect they start hatching?

 

[My15Ducks]

If you put all the eggs in the incubator at the same time, they should be ok to all go in lockdown at the same time. The underdeveloped ones may just take longer to hatch. I’m not sure. But unless your incubator has cool spots, they really shouldn’t be far behind