BTC has some significant volume support only around $12 000

Since 2017 hype lot of BTC have changed hands between 3K and 12K. Hodlers who bought in during that cycle will feel very uncomfortable seeing those prices again.
No doubt many players will try to shake out those old weak hands. Stocks, real estate and commodities all have the potential to go down, it will affect BTC.

I'm not shorting that though. Layering buckets starting at around 16K, 14K, 12K, and so on. No leverage.

Not a financial advise.