I did a 20 rep squat programme. Not the original, one I mashed together.
Take home points
Eat at maintenance and you’ll feel like shit, burn out and then stop training. Thus go back wards. You will need to eat. 3,000 calories a day minimum. Unless you weigh 50kg. In which case 2,750.
Sleep. Lots. I will run super squats as written one day. When I can guarantee myself 8h a night for 6 weeks. Not before.
Gains were great at just over maintenance. I was eating 1lb of mince and 10 eggs a day. Plus carbs. Lots of rice. My upper body exploded with a simple progression on incline bench.
EOD will be tough. I got to week 5 and swapped to E3D.
Expect a tough time if you do this properly. Really tough. 20 rep squats is brutal. But worth it.
But if as badger says you just keep asking its not going to happen. Get started. Commit.