To me, a good speculator could invest in Bitcoin at any time whether by buying it or selling it, the opportunities are always there. It is you that did not clarify the investment you refer to, and I believe it is to buy and hold. If that is the case, this might be the right time because the coin seems to have bottomed already. Though no one should be so relaxed about this, as the coin is bought, regular speculations about adverse developments should be considered.
Obviously, this was meant as a long-term investment, and in this case, now is a good time to invest. And if you want to talk about trading, and as I understand it, about short-term trading, then you can engage in it in any market, it doesnt matter if its a bear market or a bull market. But before doing this, it is worth analyzing how reasonable it would be, I have seen many times, even on this forum, where experienced forum users claim that long-term investment in bitcoin will bring much more profit than day trading. I cant say from my experience, since my attempts to engage in trading did not bring me the desired result, then I chose the strategy of long-term investment in bitcoin. I ruled out altcoins and I dont want to waste my time on them, although I dont exclude that there is also good potential there, but there are so many of them that I simply dont have enough time to study them. Right now I am fully focused on investing in bitcoin because I think now is the perfect time to do so.