Excitedly picked up 3 hybrid POL chickens today- 16/18 weeks. I asked the lady in the shop to help me collect what I needed and she gave me layers pellets. Now I'm home and reading up it looks like I shouldn't give them this yet? Lots of dire warnings about these pellets encouraging them to lay too early and they should be on growers pellets? I'm a first time chicken owner and feel a bit out of my depth. Any advice?