It seems that some people's are very different. I was told there was a 3 month sleep regression and DS hit his regression like the day he turned 3 months!! But all the ladies on the May Babies board said they babes hit the regression right at 4 months, and I've seen talk on the boards that there is a 4-month regression.

I've heard it goes in threes - 3, 6, 9, 12. Thankfully DS never hit a 6 month regression,it may be because we sleep trained thru it.

Anyhow, my dr told me more than likely he'll go thru a 9 month regression.

When were your baby's regressions?