Everything depends on the term you're looking for ...
For example if you want to hold your Bitcoins for years if you buy it know at 10k or at 8k or 12k wont change much at the end when it'll goes x10 or even more in few years.
If you're looking for short/mid term, maybe it's time to put some buy orders, but always do it by steps some buy order now and also at different level of resistance in case of the drop continue !