Yep. There really is no too early.
But be aware, no matter how young the baby is when you start, you will be done at the same age. If your child will be fully able and WILLING to take over all of her "potty duties" at 36 months then you can start at 12 months and work on it for 2 years or you can start on it when she shows most of the readiness signs and work on it for 2 months. So it really comes down to how much time, effort, and frustration you want to put into it.
What are the signs?
Extreme interest in other people using the potty.
Hiding when she has to go.
Going 3 hours or more between wet diapers.
What are NOT signs?
Asking for a clean diaper. Even a newborn will let you know they need a change.
Going all night with a dry diaper. 20% of 5 year olds wet the bed but are fully potty trained. The dry diaper at night does count towards the 3 hours or more between wet diapers though.
at 4:19 PM on Feb. 3, 2009