I never use Callisia fragrans in a pot alone. I have it in the big pots that are pretty tall that have my tree type plants like my Rubber Tree plants. When the stems get long I pull some up and lay them surrounding the plant. Sort of like a ground cover. Some are hanging down but not long enough to touch the ground or the floor.
Or like the one that turned purple that I posted this summer. It gets stuck into the summer pots as just an extra plant so that my summer pot are full.
I try to plant my summer pots on the patio like I would plant my gardens.
I have a superstition that I think works. I say superstition because there is no logical reason why it works. If I see a plant is looking like it is dying I stick a piece of Aloe Vera plant in the pot 98% of the time the plant starts to come back and survive