Do you already have a ticket? What kind of a ticket do you have.?
If you have, or will buy, a full fare, fully flexible ticket, you just wait about half an hour for the next ICE to Munich. If you are thinking of buying the ticket online, but haven't yet, you can specify a longer stopover and get to Munich just after 10 AM.
I think if the RE is on time, the connection is makable. It's not quite as far as it looks because tracks 10 and 11 go through the station without a platform. Once in the tunnel, you go past staits to 14/15 and 12/13 before getting to 8/9.
The main thing is to be at the door of the coach with your luggage, ready to get off, when the train stops. (This isn't a plane, where you are supposed to remain seated until the plane comes to a complete stop at the gate) Locate the stairs to one of the tunnels. There are three of them, so one should be close to you and other people will be going there too. Follow the herd.
Once in the tunnel, there are large hanging signs for the platforms. You'll go past two stairs and up the third. When you are on the platform of your connecting train, get on the first car and find a seat, or your seat, if you have a reservation.
This layout of the Nürnberg station shows all of the tracks and platforms..