My hens have slowed down as well. It's typical when the weather gets colder. As someone suggested, 14 hours of light is essential for egg production. You're basically fooling their bodies into thinking that it's still summer. I believe that if they're awake 14 hours, their egg production goes up. You can buy a timer that you plug your light into and set it to go on and off at certain times. If you don't need all the eggs and you're still getting enough for your family, you can also let them rest as someone else suggested. Also, hens need to be 2 years or younger for the best egg production. Production goes down as they age. Good luck!