Bud rot

The plant isn't ready and the buds will swell more as the plant is closer to harvest. You would know if it was bud rot because, in the beginning, bud rot attacks a plant's stem, which will appear mushy and gray. As the infection progresses, signs of bud rot are characterized by wilted, yellow, and burnt leaves. It's tricky to spot bud rot ahead of time because the fungus first takes hold inside the plant and works its way to the outside. The plant is suffering from too much calcium which severely limiting phosphate availability. Hopefully, I answered your question and remember " Happy Growing and Free your mind one puff at a time ".