I do not know why you are not responding, but you are not charged per question, per response, nor per answer. So after I give you my answer, you can continue to ask me questions without additional charge until you are satisfied. I apologize if it is a site issue that you posted and the post did not go through.
An extension depends on what type of program it is. Here is a link to a good article:
So depending on the type of program he is in, if the maximum is 18 months, he cannot get an extension. He would need to leave the U.S. and perhaps apply for a new program. Also, if he is subject to 212(e), he will need to go home for 2 years unless he gets a very hard to get waiver.
If the program maximum is over 18 months, then he can get an extension. Here is a link:
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