Our girls are around 7 months old (hatched over the summer) and haven't started laying yet. Since it's now winter I don't expect that they will until spring time. We've been feeding them Starter/Grower feed but wondering now if we should change their feed to layer feed or just wait until they start laying. Thoughts?
Some switch to an 'all flock' type feed and provide oyster shells on the side. Day length is increasing, and they may start laying.
It's customary to feed layer only after they begin to lay. You aren't required to feed layer feed to laying hens as long as you provide a calcium source. Many of us gave up trying to balance feed for a mixed flock that includes baby chicks, laying hens, old, retired hens, and roosters. An all -flock feed such as Purina Flock Raiser is what I feed all the time, and it works just fine for the layers. I even feed it to baby chicks instead of chick crumbles.
I only feed a Grower finisher feed once off Starter. I supply Oyster shell in a separate bowl. I never feed layer.
I'm not sure what breeds you have, that being said with the longer days they could start laying. I also don't feed layer, but I would offer oyster shell free choice in a bowl ASAP .