C.P.
Patience. Is the key. I have a 2 year old that was so easy. But my middle child was harder(Girl). Get something they like make it fun. We had a jar full of skittles. It worked. With my son. We bought him a hot wheels every three days. (they are .89 ea) . We just charted it. Good luck. It will come. Get him with friends that are and make a big deal about how they go potty in the potty and not in their pants. Remember , he will not go to school in daipers. It will work. Take it easy.