HelloMa'am/Sir,

You should please stop forcing your wishes on the child. Let him decide what he wants to do with it. If incase he follows what you tell him and he doesn't turn out to be successsful, then he may end up blaming you and you may even regret forcing him to aim for an IIT.

I am sure he will become successful in his own ways, provided he is happy and has your support and permission to do what makes him happy. Guide him to become successful in what he wants and not what you want and I am sure he will make you proud one day.

Good Luck.

And stay happy