Coach what would you think about doing 3 sets of 4 to 6 OR 6 to 8 reps double progression but doing a 90% set of one rep between all of them similar to 1-6 contrast?
Sure, 1-6 is not set in stone. I often use 1-4 or 1-5… the principle is simply to use a slightly heavier single to improve performance on the “higher” rep sets both via activation and by giving you a psychological advantage.