I have 12 hens and 3 egg boxes. I am now getting about 9 eggs a day. The last few days I have gotten a couple of eggs that were layed in the floor of the coop. Is there anything I can do to break this habit. My boxes are about 20-22 inches wide. I was thinking of dividing one or more to get 4-6 laying boxes total. Would a 10" wide box be wide enough? Will adding boxes help? Any advice?