Orchid i most recently purchased is dropping its 2nd leaf leaving one left. Its base is a little brown & mushy & it dropped all of its flowers. I water once every week & 1/2 and ensure theres a dry period & make sure to not get water in or aroung the crown. It’s normally in 75° f. What do I do? I can’t get supplies b/c of the virus & i love this orchid.