My 22 chickens were laying 6-8 eggs per day ( I know not great) and were eating layer crumbles. I ran out of layer crumble for 3 days. During those days I fed them cracked corn until I could get layer crumbles again. When they were on corn they went from 6 eggs to 2 eggs to no eggs. They have been back on layer crumbles for 3 days and I'm still not getting eggs. How can I fix this?