Since BTC already reach $7k today, there is a big chance it will dip to $5k or lesser down to $3k before it goes up again. If we base it from the previous year's data, BTC was about $3k before it started to go up. So I guess it should be the same this year. Be ready to buy when it reaches $5k or less.
I honestly doubt that bitcoin could fall below $ 5,000. Up to 3000 dollars, he definitely will not fall, in my opinion.