If for bitcoin it looks like there will not be a bigger dip anymore, I'm sure there will be a bitcoin price moment rising drastic. Currently the price is down, and that's where we can start buying and hold for long term, until the price rises again.
I agree with you that even though bitcoin prices will continue to decline in the coming days, they will pick up sharply later. So you can buy early in the next few days, waiting to pick up, this is a good opportunity.