Manners and communications after M10

So M10 has come and gone.
My child has thanked all those who took the time to send in recommendations.
Other than RSVPing to revisit days, should he communicate with the AOs, coaches, etc?
He had had a few emails back and forth until all went quiet in mid-Jan (after the application deadline.)

I think that if you have a question, you should absolutely reach out, but they will be contacting you shortly anyways. We have started to get emails now from people at some of the schools, like a coach and an interviewer, even one admissions director called on my cell phone on M10 to be sure we got our “you e been accepted” video! I think the next few days will see a lot of those folks reaching out to you, so might as well wait unless you have something you really want/need to communicate.