I just bought a potty for my 15-month-old. Am I nuts to be starting now? He seems to be hitting disequlibrium right on schedule. And it's getting colder so I'm not so sure about letting him run around bare-bummed. I am considering using some snap-fitteds (not hip/waist, just a row in front) as trainers b/c they can pull down ok when snapped. I should probably make him some leggings so his legs don't get too cold.