Check out this site on “elimination communication.” We had many parents using this technique with their babies 6 years ago in Austin. It’s known all over the world; the US is one of the few countries that teaches it infants to ignore the call of nature and go in their pants/diapers. Then we turn around about two years later and demand the babies stop “messing” and get “trained.”
It’s a fascinating subject actually, LOL!
http://www.tribalbaby.org/ECindex.html
Jan in VA