I have 4 RIRs that will be 20 wks old Monday, Nov 1. I have approx. 10lbs of grower feed left. This should last another week or so. The combs & wattles are getting big on 3 of them and starting to get darker. My question, what should I purchase for feed. Grower or Layer? I'm hoping they start laying soon, but you never know for sure when that is going to happen. Any suggestions please?