If you can, get some rooting gel and dip the stem in that, then back into the cube - that would give you the best shot. I'd also trim off the larger of the fan leaves to help the plant concentrate on producing roots - right now, probably too much energy is going into trying to keep those leaves alive...
Good luck! Glad you're trying this - because if you hadn't, you most DEFINITELY wouldn't be able to produce a clone... this way, you've got a shot at it!