Steven Siro Vai

My son will be gradusting from high school this June Steve Vai is his guitar guru He recently was accepted and rec'd a scholarship to attend Berklee College of Music playing one of his favorite Vai tunes "Juice" We met him after a concert in Myrtle Beach a few years ago - what an inspiring role model!!!! I have been trying to figure out what I would give my son for a graduation, something memorable, something meaningful and I keep coming back to how neat it woud be if he could have one guitar lesson with his mentor - so that is why I am writing - I have no idea if this would ever be possible - I have no idea how to get in touch with him - I am just a parent trying to figure out how to arrange the gift of a lifetime...Can anyone help me with this?