The right shift key vs. the up arrow key on my Lenovo Ideapad have been placed unfortunately - I think they would be better swapped - When I go for shift I usually catch the up-arrow instead
The best situation would be to swap right shift and up arrow. I tried that and still had mistakes, but now the opposite kind because I had become somewhat accustomed to the bad layout. If I go the disabled route then I would be disabling the up-arrow, and I don't have any place nearby to make a new up-arrow.
What I am doing for now is just using an external keyboard (Logitech wireless set with a mouse)