It might be an idea to candle the remaining eggs. In any case they will probably abandon them soon as they have a live chick to raise. You might want to separate one hen with the chick and leave one hen on the eggs if they are still viable when candling. There are plenty of YouTube videos about candling eggs to see if a live chick is inside.
When they take a break, make it only 20-30 mins and put them back on the nest if they don't go by themselves.
When they take a break, make it only 20-30 mins and put them back on the nest if they don't go by themselves.