I have a big problem with my new Monstera Thai Constellation. I have received it 10 days ago and when I got it, one of the leaf (the most beautiful one :/) has a brown spot (see photos), it was probably due the transport - it looked like it was fold together for some time which damaged the leaf. It was not a big deal, but problem is, that this spot is rapidly spreading. Is there any chance I could stop this spreading? The last photo is from today, so you can compare.