Oh wow Denise, I have made the first mistake, of leaving it in the initial pot. I had no idea that it grows so fast. And yes it lost the leaves super fast therefore I declared it dead RIP lol .

The poor plant, the roots were indeed so crowded...

I did not defoliate either...mistake nr.2. Taking off the red part, the most interesting one....who would have thought?
Thanks so much for this!