Bitcoin has never gone back to an old ATH once it has hit a new ATH. So when it hit 20k, it never went back to the previous one of around 1400, which I would say means we won't even see 20k anymore. Maybe very close to it, but not at it. But this is also because I don't think we're actually seeing a near ATH yet (not yet peak in 2021).

Once we confirm no more peak, then we can talk about how low we can correct.