I know there are tons of posts about this, but sifting through all of them is a bit of a daunting task. I have a mixed breed flock that ranges in age from 20, to 25 weeks. I thought for sure I would have eggs by 20 weeks, but I just got my first tiny little puller egg out of one of my 25 week old dominiques last week. Everything I've read seems to say to wait to switch to layer feed until all hens are laying, but they are all over 20 weeks at this point. Is it ok to switch them to layer feed? Will the added calcium give them a bit of a kick in the pants to get them laying? Thanks in advance!