Hi all I've had this orchid dendrobium, I think it's called, for 1.5 years however the leaves are slowly turning yellow and falling off! I brought some special orchid food but it seems to have made it worse. The main stalk is looking so bare now! I wonder whether repotting it may help or if it'll traumatise the poor thing? It didn't flower this year! Has anyone got any tips on how to bring it back to life?