We have been ECing since 8 months. He is bare or in undies/cotton trainers at home as well as at night ( has been dry for a week). He is not walking yet but, crawling. I or my hubby always pee or poo him while holding him over the toilet. Should I wait til' he starts walking to buy him a potty? When I do, do I sit him to pee or should he stand? What do you all w/ boys do?