ok so I need some advise, I have four pullets that I bought from tractor supply 15.5 weeks ago and six pullets I bought from tractor supply almost nine weeks ago, they have been introduced and living together for about a week and a half. And now today one of my 15.5 week old ISA browns laid and egg, I figured this is real early at this age. Question should I continue to feed her the chick feed or start putting out layer feed, any advise would be greatly appreciated. Thank you