Potty training a boy!

Eva💋 • Hello ladies! Let`s talk!
I have two children a five year old girl and two year old boy. I was able to successfully potty train my daughter at a year and a half years old. I started with my son when he was two, but he just isn't getting it! There have been times when he actually went in the potty and saw the reason for it, but he still goes in his diaper with no care in the world! He turns 3 in October I'm really hoping to have him out of diapers by then. Any suggestions?