Check the movement mate, although the price of Bitcoin has surely fallen in the past several days, it would be too early to say that it's the best time because you have to first discern if such movement will go for a long time, and if it will, then wait for more time until the coin falls down to the best value you can buy it for. When I say "best", I mean the lowest value that you can get more amount for less money. However, you should also plan for the reality that if it falls that hard, the amount of time you would have to wait for a profit might also take longer.