Considering the drop was initiated by a whale dumping BTC to buy it cheaper later on, you should fear only panic selling yourself!
There were any factors in play here for the bitcoin price to drop so significantly over the past couple of days.
One was bakkt although many are denying it had anything to do with it but you can not say it didnt contribute to it even for a couple of percentage of the 20% dip in the price since a week ago. This was from people going in with the fud and panic selling.
The other was a $1.2 billion dollar sell off done on an exchange just a day before. This was the major part of the steady increase of the dip. This is for certain.
And lastly was the cme contracts expiring within the next 24-48 hours. This can be another major factor in people selling off thus cause the price to fall closer to where people want to start exiting their holdings.