@jksjkc
I have grown fiddle leaf by the hundreds and in my experience, if you have well-draining soil, there is some air-movement, and the plant is getting bright light, it is practically impossible to over-water a plant this size. Others will disagree with that statement but that's been my experience over three decades of growing them. Personally, when someone tells you to water with such and such amount, I think that's simply ridiculous. You've never had water come out the drainage holes. Holy cow. I water until I see water coming out those holes. That's when I know I have watered enough. I believe you had some leaf-drop simply because the plant was recently up-potted and its also been stressed with a change of locations. Nothing more.
As far as the leaves go, your plant looks exactly as it should. Older leaves will "flatten-out" in their presentation but new leave, unless the branches hang down, will always begin their life growing upright. That's just their nature.
Here's my 25+ year old fiddle. If I had not constantly cut her back (twice each year) and/or air-layered her branches (three times each year), she would easily be around 30' tall. The first photo was taken 5 yrs. ago (outside) and the second was taken last winter (inside).
I am sending you a T-Mail.
