J.H.
The best advice that I can give any parents trying to potty train, is don't. Let them do it on their own. My oldest was 3 years old and 3 days and my 2 year old (3 in August) just decided last week that she was also ready. the best thing you can do is just let them do it on their own. Supply the things they need and let them choose. I got a little potty for her (the youngest), I let her pick panties and put them in her drawer next to her diapers and just let her know that she was old enough to start trying if she wanted to. The worst thing you can do is push, because not only is it frustrating to them, it is also frustrating for you. When they are ready, they will go on their own.