Hello, I have a flock of 3 hens, one silkie and two Brahma hens. My silkie is my oldest, she's been laying for 4 months now. My other 2 Brahma hens haven't started laying but they have been squatting for a month now. I'm running out of their grower feed and I'm looking into buying them layer pellets or crumbles. Would it be safe for them to transition to layer pellets/crumbles?