I think there's absolutely no harm in having it around and giving it a try if he's interested. We didn't use a potty at all until maybe around 2 years and 2/3 months. Before that, she never showed any interest and I didn't really see the point of having an extra thing in the bathroom to trip over. But when she started to ask about using the toilet or being interested in what I was doing when I went, we got a little potty and just put it in the bathroom upstairs. When she got dressed in the morning and undressed at night, I'd just offer her the chance to sit on it if she wanted. She often didn't, but sometimes she did and she started doing wees on there here and there, which was good because it meant she got the concept. I didn't really have an imminent plans to potty train her as we run a business and summers are busy with a lot of travel, so I couldn't deal with the idea of traveling with a potty training toddler and dealing with customers while trying to keep her from wetting herself! So we waited for maybe about another 4-5 months, until she was 2 years and about 7 months. By then, she was using the potty before her bath and in the morning much more regularly (still in nappies all the time though), but starting to ask to sit on the big toilet when I did, including when we were out in public. So then we did 4 days of potty training and she was done and did great. I think if he shows an interest, there's no reason not to go with it. We have friends whose daughter is the same age as ours and they started to use the potty at about 15 months. She didn't really potty train much sooner than ours, but I don't think you can ever go wrong with following their lead.