well ... it depends on the child..i was very blessed to have a child that wanted to potty train. she done it on her own she started about 19 months..but i did not push her...that is what makes the difference. My sister pushed her baby to train an it took forever!! But everytime u go to the bathroom but them on the potty too.
when my son was one 1 1/2 i had got him a potty chair he played with it set on it he got use to it then at 2 1/2 he was potty trained just buy the chair let your child get play with it i think it would be easy to have your potty trained buy it & try good luck with it keep on working with your children