In the previous 3 bubbles bitcoin stabilized after the crash around 2-3 times the top of the previous bubble.

So applying this logic, the bottom of this bubble should be around $2-4k. For a couple of reasons however this bubble is different - lots of finance guys participating. Because they are experienced they will buy ahead of that to make sure they don't miss the bottom. So I see this bubble bottoming at $5k. This has the nice property that most of the "dumb money" who entered in Nov-Dec without any idea about trading or cryptos will lose money (markets tend to make sure that people who entered during a frenzy lose).