Establishing a sleep/nap schedule

Amanda
I made a post about this a looooong time ago, but I can't find it on my history since it won't let me go back that far. When do you establish a sleep/nap schedule? My daughter mostly sleeps through the  night (she wakes up once in the night occasionally, but sleeps through most nights). When do you put the baby down for a set morning nap and afternoon nap?  Right now she just sleeps in her swing in the day off and on, then we put her to bed around 9pm after her bottle. When should I put her in her crib for naps and for how long each?