I have this Calathea for a year now, but for the last two months someone else was taking care of my plant. When I returned the leaves were all droopy. In the past few weeks I have tried to get the plant to return to life again by giving it weekly showers and only watering when the top of the soil is dry. But recently the leaves started to turn yellow. I already removed one because it was completely yellow within 2 days. The only positive sign is that one new leaf has grown.
The plant is in a terracotta pot which has a hole at the bottom. I think there are also hydrogranules at the bottom of the pot. I placed the plant around 6ft from an east-facing window. I'm stuck on what the problem can be, does anyone know how I can bring my plant back to life?