Resetting Bluestone

I have a 8×6 piece of bluestone sidewalk at the bottom of my stoop. The soil beneath the bluestone has eroded significantly.

I spoke with a contractor who said that the piece would likely have to be cut in order to reset the stone. I’d really hate to have to cut such a hard to come by of bluestone.

Does anyone have any experience resetting/leveling those big bluestone pavers? Anybody they’d like to recommend?