That’s a lot of weeks to do hypertrophy/strength endurance work. The more trained you are the less time you need to spend doing it. I don’t mean to say it’s unimportant only that you need to spend more time with 5’s and 3’s and less in 12’s. Shorten your blocks down-no need to do that many consecutive weeks of the same rep range-too much type I fiber development. 6-8 reps, while closer to developing strength is not really addressing that issue like lower reps would. Shorter blocks with more frequent rotation of the rep ranges.