The thing is, there is laying, and then there is ...laying. Technically speaking if a bird is laying 1 egg a week, she is laying. I would much rather have a few more eggs than that.
A lot depends on what you want - and the actual bird you got. We all know people who died at 65, and others that died at 98.
If you want long term pets, well keep them, laying or laying 1-2 eggs a week. If you want a fairly dependable egg source, well then rotate birds out, and young birds in. A multi-generational flock tends to get you at least some fresh eggs for more days of the year.
One can also freeze eggs now, during high production to use for baking durning the dark days of winter. That frees up your fresh eggs for breakfast. Some people put eggs into lime.
The general rule of thumb is, 1st year - several eggs a week 5-6, average size for breed, 2nd year, 3-5 per week, but larger eggs, third year, a little egg quality slips - the whites get thinner, might get 2-4 eggs per week and so on.
But that is just generally speaking, a lot does depend on the breed, but even in the breed there are a wide variance.
Personally, I like adding birds each spring, and selling some older ones mid summer, so who buys them gets a few eggs before molt.
Mrs K