Upload & Sell: Off
I'm afraid the reponse by Dennis H. misses the point of your query.
The DESIRED CAMERA FUNCTION in this matter is to auto-focus immediately before the camera trips the shutter. NOT when you start the self-timer countdown with the remote switch.
sorry, nikon doesn't support that. the options are use a remote shutter release so the OP can you focus on themselves or hire somebody to take the photo, as people that sit around taking photos of themselves probably don't have any friends.
Another possibility is to setup focus-follow mode (it has a new name now) and creep towards the camera until it fires.