Yup, i change blades every single day man, so that is a bit too often to spray the decks, and we by far cut thru some heavy SH*^= !!! it would be wise i think to give it a fair trial to do it now, very heavy and it will soak in over the next couple of months.
Then scrape after the first several days of mowing, and reapply then heavy.
Big problem is, we change all blades in the moring before going out. I have not found the dicipline to do it at night after a very long day! so, with that in mind, does doing it after a while like you say do good with a morning of reapplication spritz?