Yesterday, one of our hens laid their first egg! This is my first time with chickens, and I could definitely get used to seeing eggs in the morning! They are about 15 1/2 weeks and are Red Sex Links. I wasn't expecting them so soon, but I guess RSL were bred to be layers. Anyways, I was wondering if I should switch to a Layer Feed yet. Two of our three hens have a decent red comb, and they look about the same. However, the other hen still has a small, pale orange comb. It is mostly just little spikes. I understand the grower feed has the fat and protein to grow, but not the calcium for eggs. I don't want that hen to fall behind in growth. Should I just get one more 5lb bag of grower and just have oyster shell available? Or would it be safe to go ahead and switch to layer? Thanks!