I started potty training our son at six weeks old. (babycenter.com)
Do I sometimes question my sanity and wish that I had sleep trained my son when I'm nursing him back to bed for the 6th time in one night? (attachmentparenting.org)
I posted above and then remembered — my son's father (separated from me) potty trained our son at 2 1/2 when he was at his house for the weekend using this method. (babycenter.com)