Having taught in Aspen Colorado for many years I have seen some incredible uphill lies around greens, students asking what to do? The ball goes up easily but won’t travel far. players are invariably short in distance control.
Two things, take your less lofted wedge play the ball nearer to where your weight is. On an uphill slope the ball should be closer to the back foot, it’s where gravity takes you, this will keep the ball lower on trajectory so that it will run out, Let the club head follow the slope upward. A sand wedge becomes a lob wedge on an uphill lie, gap wedge becomes a sand wedge, A regular wedge 47 degrees becomes the gap. the 47 degree the better choice.
Final gem stand as narrow as you can, , like standing on skis. there is less sense of slope. The wider your stance is the more you will feel the slope and get stuck.