Staggered Hatch help

[Calichicks23]

So I ended up taking over for a hen that abandoned her nest. There 6 viable eggs after candling last night. With that said they seem to be days apart. I’m newer to incubating and candling.
I have two eggs that are mostly black due to the chick being bigger already.

Can anyone help me guess their age ??
Not sure when to stop turning eggs and put them into lockdown

 

[Calichicks23]

So I ended up taking over for a hen that abandoned her nest. There 6 viable eggs after candling last night. With that said they seem to be days apart. I’m newer to incubating and candling.
I have two eggs that are mostly black due to the chick being bigger already.

Can anyone help me guess their age ??
Not sure when to stop turning eggs and put them into lockdown View attachment 3430760View attachment 3430762View attachment 3430763View attachment 3430764

These are Silkie eggs

 

[Calichicks23]

**Update **
Egg #4 pipped today !!
Today is day 13 of incubation.
Not sure how the others are doing since I put them in Lockdown. Hoping the others don’t take too much longer

 

[Calichicks23]

Within 12 hrs of the pip this little silvery blue baby hatched