It looks like the plant is overwatered, as the leaves appear very heavy and droopy. The yellowing leaves and wet buds also point to overwatering. The rapid decline might indicate too much moisture in the substrate, leading to low oxygen levels at the roots, potentially causing root rot. Reducing the watering frequency and ensuring the pot dries out properly between waterings could help.
Additional steps:
- Aerate the substrate by gently loosening the top layer.
- Ensure the pot has enough drainage holes to prevent water buildup.
- Lift the pot to check its weight; if it's too heavy, it may indicate standing water.