Have you tried soaking it in liquid rooting hormone stuff ?
Maybe if you give it a soak it will absorb the root growth hormone stuff PLUS absorb some moisture to help itself along. Hey, what have you got to lose ?
If it succeeds you gain a plant and the experience, if it don't, THEN we'll all laugh at you.
Just jokin'
By reporting on what you are doing and the results, good or bad, it also helps us learn as well. It's like my poor Phal, I put rooting powder on it after it lost it's roots to root rot and it started growing new root buds, then the b****y thing decided to go down hill.
At present it has ONE leaf, and I am trying everything for it to succeed, but if it doesn't then it is one I put down to experience. Hopefully not.
Stick with it until it finally gives up, while there's life, there's hope.