what's going on?

Hi there! I take a quick look on the strain info and it says flowering time 9 weeks, so you should still be about half way. This stick to my eye: "let them use a bit of their build up in the soil." 'cos how do you know what have been build up in the soil? There could be any nutes that the plant have not used and when the soil dries out all the nutes form many different kind of salts and when these salts dissolve again, there might not be same stuff in the soil again and the pH could be whatever etc etc. I don't know if this thing you are doing is actually legit but to me it does not sound good idea atleast when something seems to be going on. Maybe give this girl a good flush and give less flowering nutes to her and see what happens or something?