I'm trying to gauge whether $12k is the bottom of this downtrend or not, but apparently it is still fighting and hovering somewhere between $13k and $12k at this very moment. For me, I'd say wait a couple more hours or a day or two before starting to buy. Who knows how far this dip can go? It is already a good buy but again just to be safe, try to weigh whether the market will still slip down or not.
When many people are in panic, wise ones are acting to gain more profit.. Just don`t sell at the bottom, contrarywise, it`s a good time to buy