Sometimes it takes a while for the green light on the dash to go out after shifting from 4H to 2H. No need to back up. The light will eventually go out. And you can be assured that as soon as you put the transfer case back into 2H the system is no longer in 4 wheel drive.

And there is no need to reverse after unlocking the hubs.

1998 Sportage - Gone.
2004 Honda Civic Coupe.
2007 Suzuki Grand Vitara - She got it.