The reduced production is actually quite normal for fall/winter. The egg cycle is tied to the daylight cycle. When the days get too short, egg production slows down or completely stops. The good news is that tomorrow is the shortest day of the year, and then days will start to get longer again. Egg production will begin to pick up again in January or February.
I thought it was today is the shortest day of the year since it's the first day of winter.