Knowing when it's time for a pivot/washout/deload week

I am a 23 year old male and I have been training since high school, however most of it was very unstructured until the last year or two. I have been running the 12 week strength template for the last few months. Before that I ran 7 week, 3 day GPP/hypertrophy template. Over the last 11 weeks I saw 40 lb increase on my squat, 25 lb on my bench, and a 30 lb increase on my deadlift. Today was day 1 of week 12, and I had planned to complete it as normal, but I saw a significant decrease in my single@9, from 405 to 365 for squat. My bench was also down a bit but not as much as squat. Week 11, day 2, I pushed my deadlift quite a bit and probably surpassed 1@9 and was more like a 1@10. On day 3 of week 11 I also saw a significant decrease in performance but completed all my sets as prescribed. Other than week 11 being fatiguing, probably more so than ever in the past, from a training standpoint, I didn’t see any other variables that would cause my performance to be down so much.

At this point, I decided to not finish the 12 week strength and to run a pivot week before getting into another developmental block. This is my last week of winter break before my final semester college (Bachelor’s degree in Mechanical Engineering), so I felt a pivot my be a good psychological break before school and I felt a pivot would be more useful than finishing out the 12th week with significantly lower numbers at the prescribed reps, sets, and RPE.

My question is, is this a reasonable approach? Am I missing out on much by not completing this last week? Obviously the psychological break before school is a factor, but other than that, when does one know when it’s time for a pivot or wash out? I would love to have a discussion about distinguishing signals that an individual may have acquired all that they can from a training block and when pushing through may result in additional benefits.

All this being said, of course one week doesn’t matter that much in the grand scheme of things, but I am at the beginning stages of a coaching career and writing training for others, so these minor things interest me and would be useful to me as I develop my skills as a coah. Let me know if anything is unclear or if additional information is required.

Thanks to all of the BBM team and anyone else for input.

Yes, I think this is a perfectly reasonable approach given the changes in performance combined with your psychological stress going on. We like to pay attention to individuals’ subjective fatigue ratings (like session RPEs, complaints of aches/pains, etc) as well as performance metrics (like the decline in your performance as rated by the single at 365).