A week ago I adopted my first Fiddle Leaf Fig, as you can see from my attached photo the Fiddle's bottom leave have started to turn brown and die. While some of the higher leaves are also like this, most of the top are unmarked, which makes me think this is from overwatering?

I got the plant last Thursday and watered on Saturday.

Should I wait a week before watering again to let the soil dry out? OR could this be a different problem?