I ran a condensed version of this for the past two months. I have lifted bench, squat and dead (or variations thereof) and doing 6 sets of 3 with 1 minute between sets. Using bench as an example I couldn't get more than 3 sets of 3 @ 122.5kgs and failed the 3rd rep on set 4. The next week I benched 145kgs for a relatively easy single. High bar back squats I failed to get the volume in at 145kgs, again on the fourth set but got 180kgs for a hard but max single. By dropping the rest periods you get to strain without heavy weight and you will get stronger as well as improving your work capacity.
Don't call it a comeback