I have 15 chickens - 3 at 24 weeks, 7 at 19 weeks, and 5 at 14 weeks. Only one of the 24 weeks (EE) is laying, and has been for 3 weeks. My husband has talked to a couple of people who have chickens and they recommend adding light to simulate longer daylight hours, saying this will help bring the other girls into egg production. If I don't add the light, will this mean I'll likely have to wait until spring for the others to lay eggs? I have EE, BO, BA, Sussex, GLW, Giant Jersey (who I know will take longer to mature), and Dominiques. Thanks!