I have had my fiddle leaf dig for about one month and about a week ago the leaves started to fall off. I had another one for about 2 months and about two weeks ago all the leaves fell off of it and not it is just the middle trunk.the leaves turned brown and then started falling off. I water about every week and just 1/2 cup. The plant is in my bedroom. I used the root rot repair from this company and I didn’t notice improvement what should I do