I regular see the price of the bitcoin, if i see the price is low, I buy many of it, and sell it when the price of it is high, that is the only way i trade bitcoins
Price was around 450$ this morning, not a good idea to buy now. But halving is coming and every bitcoin will make profit for us, so pirce doesn't matter now. I think many people think this way right now.
If you will not buy now, you will regret because it could be the lowest price you could see. Bitcoin price are constantly increasing and it has nowhere to go but up. I would say that this price now is a good buy already if you do.