Monstera Albo having a brown spot growing.

Yesterday I saw this small brownish dot on the leaf of my small plant. ( the soil where the plant is, doesn’t retain much water as there is a mix of orchard bark, coconut husk and chips, lechuza pons. Etc, I bought it that way). Now, today I saw the brownish spot grew more. Should I cut this leaf? (There has been 2 times in specific I’ve forgotten to water it, mostly because I have an schedule. But the the schedule doesn’t consider this pot doesn’t retain water. What should I do. Thank you.