Most nutrient dosages aren't written for growing cannabis... they're written for "ordinary" plants.... you've got excellent instincts here... they DON'T need a lot of nitrogen when they're in flower (they do need SOME, however!)... Some of the other nutes you're using (the Grow and the Bloom) has some nitrogen in them (at least enough for the flowering stage), I'd get rid of the Micro! Trust your gut! It's telling you the right thing!
Good luck!