C.S.
J.,
You are doing a great job. I agree with these moms who say give it a try and see what happens. I've worked in child care for a very long time. Potty training for the last 8 years. I've learned that what you are doing now is just introducing the concept to him, and he'll get it. If it becomes frustrating, back off alittle, keep potty chair out and ask if he wants to go the way you are now. If he's ready, it'll happen. If not, that's ok. Don't pressure him, praise him for trying, but don't just wait til he's 3 either.
If it takes him til he's 3 to decide than that's ok too.
Good luck, you're doing a great job.