I've come off abruptly before. The longest time unfortunately happened to be the one time where I also couldn't train, so I really fell to shit. The contrast was great though. I did train again clean and looked better in the gym. But the big revelation was when I finally took gear again and immediately blew up. Did a quick run of test ace, mast prop and NPP using a ml of each EOD for a couple weeks (basically ran a bottle of each).
After that, everything came back and I was actually a lot leaner than before. Legs still took a bit more of a hit as I've prioritized upper body but training legs twice a week now. Even without the size, the cuts and shape are there. It's remarkable how quickly you gain things back.