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.
i can understand the dilemma of the OP here as it seems he is relatively new in this market. as you said, anyone can buy anytime at their own convenience. as no one can exactly tell you what's gonna happen, you will just follow your instincts on what to do with your portfolio. and that i can say, is actually hard for newcomers in this market. and most of them have the notion that this market can get them rich at a short period of time.