Leaf spots issue

I'd try water-only irrigation - just as you apply fertilizer, hopefully... no flooding or anything.. As far as adjusting the ratio of what you feed -- it's one plant, so difficult to say, but if this is common, yes. at the least, make a note for this strain for future reference if you plant to clone it. i'd give an irrigation or 3 first -- an EC meter can help determine how long this is needed. Get the concentration back in check, then think about altering feed -- or how often you feed.. so many ways to accomplish similar goal and which is best for your context just depends. i'd go a week and see what happens with water-only... if it takes a nosedive or shows obvious deficiencies, reverse course.