2 RIRs that are 7 months old, raised by me since 3 months old.
1 RIR and 1 Black Australorp 6 months old, raised by me since 2 months old.
1 RIR and 1 Dominique I aquired last week that are supposedly 8 months old.
Only 1 of the 7 month old RIRs is laying, and she just started 2 days ago (Tuesday). The other 7 month old RIR is doing the squat, but no eggs yet. the two 6 month olds aren't even squatting, and the 2 supposed 8 month olds aren't squatting either.
You are going to be just fine. Just be patient. I have heard that the older they are when they start laying, the fewer problems they tend to have. My 7 month old has laid an egg every day for 3 days now (since she started laying), and the first one was the size of a "medium" store bought egg. Today's egg is the size of a large store bought egg. I am thrilled and glad that I didn't give up on my girls. Hang in there!