This is really more of a Novice program than Intermediate, which is fine. What makes you think it's Intermediate?
If the first three questions are answered, I'd like at technique. After that - well, missing reps is part of the LP. When you miss the same weight at the same lift twice in a row, do a re-set and work back up. When it happens again, either do another re-set or end your LP there and switch to an actual Intermediate program. You can read this about some tricks to extend the LP a bit longer and implement, but that's the basic gist of it.
Link:
Trying to keep LP alive