I live 45 minutes from a feed store and only get to town about once a week. Last week my feed store was out of grower/starter and my son bought layer crumbles for my 10 week olds and 6 week olds. They have been eating this all week. I read here that could be a big problem. Can I go back to grower this weekend??? Have I really blown it??? I'm worried...My 6 weekers are RIR'S and I love them!!!