Help on nutrient burn

I need advice on how to bring my plant back from nutrient burn. I gave it bone meal about a week ago and im not sure if thats what its from but wad told so.

Doesn't look like a nutrient burn to me. Something is going on though, does have the look of too much nitrogen. The brown spot could be indicative of a phosphorous issue but it is odd that it's only on that one spot. The bone meal brings a little nitrogen and a lot of phosphorous to the party. It should be noted that a P def and surplus can look a lot alike with the surplus not having the light green leaves (yours are dark). An excess of phosphorous will generally look like a Zinc or other micro nutrient deficiency (not the top growth). I think this is whats going on, too much bone meal, probably didn't need any honestly. The bone meal will continue to release P slowly for the next 3 - 4 months. Not sure there is a good way to fix this.