I think it depends on the strain. One of my girls layed every other day and the other layed 6 eggs a week. Then girl one went broody followed by girl two a week and a half later. So I got about a month of eggs out of them.
My silkie was laying me 1 egg every other day faithfully then went broody, hatched her chicks, started laying again 4 weeks later, now bam, she is broody again. Which is fine for me now I don't have turn incubator on for splash eggs coming in.