ya i think its very smart to train both the low reps and also do higher reps with lots of squeezing too.
right now im in a light weight squeezing phase and my muscles are responding nice. while the weights are lightened up on some exercises, the form is made extremely strict which makes the weight feel much heavier since theres less involvement from other muscles. i do focus on progressive overload during this phase, making sure to incorporate some heavier work as well, but always keeping it moderate and away from failure when doing so.
in both phases, always far away from failue. 4-8 sets per body part, each muscle getting hit every 3rd or sometimes 4th day.
when it comes to periodizing the light/heavy workouts i am still figuring it out. i just do what feels right. right now im responding well to the squeezing so ill keep doing it. when it slows down ill switch back to heavy. i dont lose strength during the light weight phase i just dont gain much in terms of immediate 1rm potential. once i switch back to heavy the increased muscle volume will result in a spurt in strength after the muscle gets conditioned back into strenght mode however.
you could probably just do one hevay workout, then one light workout, and back and forth repeatedly.. but idk. seems to me a better idea to stick with one then do the other for now. but maybe as a way to further periodize i could try switching to that kind of method after a while.