The instructions for the beginner template say to repeat the final week in each 4 week block as long as the e1RMs are improving for the lifter; once two or more lifts stall proceed to the next training block. Does this include all secondary and tertiary lifts or just the main movement squat/bench/deadlift in slot 1?
It’s really up to the user, as I could make arguments for both approaches. Personally, I would recommend moving onto the next block if 2 of the priority lifts hadn’t budged in 3 weeks. I’d project block 1 should last for ~ 8-14 weeks for most folks.