Playing one on one

The reality of when my free time falls means I’m going to have just one player for JCoM, at least for a while. Has anyone else done this?

I’m almost certainly going to have to have one or more NPCs in the player’s party, how have other people handled this? Treating them as PCs and tracking Momentum and Luck adds a bit to my load, but not doing so deprives the player of potential resources.

Anyone got any experience with this? Or suggestions?

Thanks!