Citrus plant leaves are turning a bronze color ( whole leaf) and look droopy?
Certified GKH Gardening Expert
This appears to be multiple deficiencies. You can add iron sulfate, dolomitic lime, and a citrus fertilizer, and this will take care of the problem.
Here is an article that will help you care for citrus indoors:https://www.gardeningknowhow.com/edible/fruits/citrus/growing-citrus-trees-indoors.htm