My oncibidium was healthy, a lot of flowers, several new shoots, until last week. I watered it too much before going on a long weekend trip away from home. Coming back after 5 days, I found black rots starting from the new shoots up to a couple of leaves, which turned dark brown. I removed them from the old pot and medium, sprayed all over it with a 3 in 1 fungicide and insecticide bottles before repotting it in new medium and pot. A few hours later, the leaves became stiffs, like frozen. I thought it was dying. After one day, it seemed to come back to life, the leaves became soft again, and the new shoots stood straight instead of drooping. I followed the directions of the fungicide which recommended a 14 days treatment. However, after I sprayed it on the second day, all the symptoms of stiff and drooping leaves came back.

should I stop the treatment of fungicide?