The inverse of this is why I thought I might get Babs to stop laying - I was trying to prolong her night.Came across this interesting article, and I am now thinking this is why my pullets have started laying - as I have been getting up early and doing chores before heading to work.
https://the-chicken-chick.com/supplemental-light-in-coop-why-how/#:~:text=There is no evidence of,some muscle and fat stores
But I gave up as you all thought it was likely to be useless and it was going to be a lot of work.