How long did you keep your baby in your bedroom for sleeping at night?

We started transitioning our daughter when she was 4 months old, b/c she was sleeping through the night several times a week. By 6 months she was sleeping through every night and in her crib until her 1st morning feeding at 6 or 7 am. Our son is 4 months now and we haven't started transitioning him just yet, he still wakes once in the middle of the night.