Is this the green opportunity for us to buy or is going to return back after a while
Many investors are buying and selling their bitcoin at any time they feel like, you can do the same by buying bitcoin now that the price is at a bit low and sell back when the price is high. You must not wait for any special time to do that since you will be investing for profits and with the money you can afford to lose. Every other additional thing is minor than to hodl your bitcoin and keep your seed phrase safe because there is every possibility that, the price of bitcoin today will not be the same in months to come after the halving season.
There are some guidelines if how can one invest properly like buy low sell high, do a DCA and so on.. but at the end of the day, it was still our money not theirs so we can do what our heart says. Maybe some of us are lacking in budget and don't know if when they can have an extra fund, so for them investing can occur randomly.
Some also invests depending on their mood and it doesn't matter if the price is high or not. Same goes for selling. We only need to make sure that we are investing with the money that we can afford to lose. There might be other things that are also important other than to HODL and keeping our seed phrases in a safe location like having a patience and self control.