Try rooting in some fresh potting soil. I have had this plant and although I don't recall it's name I believe it is a coleus.
I would take a cutting with 2 sets of leaves and take the bottom set off and dip the cutting in a root hormone, tap off excess and stick in a hole made with a pencil. Firm soil around it and keep moist not wet.
I know other folks have different ways, but this works best for me.
Best of luck and I will be sharing cuttings next spring, if I don't hurt myself again.
Sidney