You can't just "run an LP" whenever you need to get a lift up. We set up rotations and the like because we can't run LPs any more. If you got 2x2 and not the 3rd set, that is fine. Go back next week - PR your 8s, PR your 5s, come back to 415 and aim for 3x2 again. I discussed in the book what to do when you have a miss at a given rep range. Keep pushing the other two rep ranges! It's a great system and works well. But you are still gonna have misses in there. Especially on the very heavy deads.