No harm in trying, except... If it sets you up on that one track mind that you've gotta get this done. Because if he's not ready, he won't do it, at least consistently, so you just don't want to set both you and him up to be really stressed out about it. I don't know how long he could even hold it, at that age, which is part of the problem with regard to potty training. My kids knew that they were peeing, and especially pooping, pretty early in, too. Especially my oldest daughter, who was walking by then. As I recall, she tended to go behind a curtain or chair, to squat and poop in her diaper. But in my case, with my kids, and even my oldest daughter, that didn't mean they were actually ready to be potty trained, that early. At first, the novelty of pooping in the potty was fun, but later, when they were tired or too interested in playing, or just couldn't hold it very long, all the stress about stopping and running to the potty kind of backfired, and they wanted nothing to do with it. It was still a long road, from the point that they started, till they were actually trained... and they were older. If you want to, that's fine, but just know that you are heading into territory that can get pretty frustrating. I think more than anything, just have realistic expectations, and realize that it's going to be a very long time, no matter what, before he can go overnight or even naps or long car rides. You don't want *him* to get stressed, because you are disappointed that he has 'accidents'. I might just put a potty in the bathroom and let him sit on it, when you go, and just let nature take it's course, without talking about using the potty constantly, every day. That might be too much pressure, too soon. My mom was obsessed with me getting my kids potty trained, as early as possible. And it didn't work. I wish I had gone with my gut, and been much more relaxed about it. I think she was just pushing me to go back to work, and they couldn't go to the nearby preschool without being potty trained, as stupid as that sounds. Just as with food issues... I think it's better not to battle kids about their bodies... How much they eat, or when they go poop... I think that's important for the parent child relationship and mutual respect. Just my humble opinion.

Just follow his lead. No expectations .

No harm in trying