Clarity on 1RM/RPE

So I’m trying something different… I would like to progress my program only if I was able to hit all of the sets for an exercise in a workout at the target RPE.

Said differently, my target is: 10 reps x 3 sets with an RPE of 9.

If I complete (fail): 10 reps x 3 sets with an RPE of 9.5, do not progress at all

If I complete (succeed): 10 reps x 3 sets with an RPE of 9 or less, adjust the 1RM up by using the calculator to back into what the new 1RM should be for the next workout.

I’ve been trying to make it work and haven’t gotten there. Any suggestions?