I have eight week old chickens. I went to pick up a bag of feed (at a new place) and told them I needed grower. He seemed confused, but then said he had what I needed. When I got home, I see that I got LAYER. Isn't it way too early for them to be on layer? I am no expert but I am pretty sure that the other feed store told me starter, then grower, then layer. I am assuming I should NOT feed it to them, yet, and get them grower instead?