He's 7 months old now.
By jog i basically mean just walking fast not like running. I make him do it thrice a week. Thank you for the advice.At that age, do be careful with the jogging. He should not be doing any repetitive "forced" (in the sense that you are along with him setting the pace--he may overdo it just to keep up with you [I know, you're probably the one keeping up with him, but still...] especially on hard surfaces, until he is about 18 months old. It's not good for his joints and ligaments in the long run.