Once they do start, being hybrids they will probably lay all through next winter without a break to make up for this year. Mine are now experiencing their second winter and their first moult, after holding their plumage for the first two breeding seasons, and are now down to a few occasional eggs per week whilst taking a break and re-growing their plumage. Shell quality is getting poor, though, shells are very thin and fragile, although I'm supplementing with mineral powder in their mash. I hope the break from daily laying will help them rebuild their reserves for one more season, maybe. Trouble is, once a hybrid hen gets to the stage where there is no shell, just the membrane round the egg, it can get stuck or worse, break inside her when she tries to push it out, and because of the way their oviducts connect with their gut, the broken egg can go down into their gut and decompose, resulting in peritonitis, which is incurable curtains for the hen.
re teatime treats - if you have stripped out the middle ribs from your own cabbage, especially kale or cavolo nero, you can cut them up into little bite-size pieces and add to the mash. They can't chew a long strip of cabbage stem but like the little bits and it adds fresh greens with no waste. They will regulate how much to eat, it's just a matter of offering them the right stuff and not anything high in fat, salt or sugar.