Go back to basics and make very sure they can attitude fly and trim properly by looking out the window.
Then its the old "dot to altitude, wings to DI" etc etc if you don't know the patter say and I can put it up.
And remember just keep saying "what next?" if they look as if they are having a breather.
And don't let them go near MSFS until they can get the scan right it just reinforces !!!!e habits.