Guy, some kind of periodisation of you meso cycles should be implemented. This is not oldschool 90's bs
@Mathb33 . This is current research. Supported by current opinion leaders like Mike Israetel for instance. If you are stuck in a specific rep range for a long set of time, your gains wont be as profound as if you would employ some kind of periodisation.
Every BB should periodise between metabolic work, hypertrophy work and strenght work. A 3 - 5 rep range messocycle should be employed for something like 2, 4 week strenght blocks.
Something like this:
2 x 4 week metabolic (1 x 14 at rpe 7, 1 x 12 at rpe 9)
3 x 4 week hypetrophy (1 x 10 @ rpe 7, 1 x 8 @ rpe 9)
2 x 4 week strenght (1 x 5 @ rpe 8, 1 x 3 at rpe 9)
This way you periodise modalities and intensity (rpe's). Granted, it's hard to hit a specific rpe at high rep ranges, but you can do them till failure if you wish ...
This really is not oldschool knowledge, I don't know if they even knew this back in the day. Heck, in the old days, they thought you had tho change exercise variation weekly, which is nonsense. The same exercises should be employed for at least two mesocycles.
One other thing that has been proven is that hypertrophy is the same, no matter the rep range, when number of working sets in equated to be the same. But when the gains stall, it's time to switch modalities.