Just bumping this as I'm also interested in it. If it's not possible to make the Pro controler act as one joycon, perhaps making it so that the tabletop/docked switch acts like its in handheld would be easier? Because that would fix the game too. Would really appreciate any solution to this.
Is there a way to play pokemon lets go with a pro controller nowadays? I have no joycons, so i can pick neither the 1xjoycon or handheld options at the start of the game.
Can some plugin make the pro controller emulate either?