The price is going to crash back down to under $2,000, mark my words. I do not know exactly when it will happen, but my estimate is before the New Year, guaranteed. If you think about it that would make a lot of sense since everyone will want to sell it to buy gifts and stuff for the holiday season. Although I have a feeling that Bitcoin and cryptocurrencies in general will possibly be the hottest gift too.
You must be joking right ? 
Because if you are not, then I must say that I haven't seen a person like you in my life. Who would predict the price fall of Bitcoin because of a new year ? The price of Bitcoin is around $6k and you are saying just because it's a new year and people has to buy gifts for their families, the price will fall back to $2k . 
Who in the world will buy so much gifts 
Is there any way of betting on a price fall? I can't find any derivatives for that.
Bitcoin is reaching new heights now and since the fork is near there are no chances now that the price will see a decline.After the fork there are good chances for a correction in price and I must say that the correction should happen since BTC has raised too high in a very short time which gives it risk to fall harder. If a correction of price takes place then BTC will be more strong and rise with good stability.