I don't think you'll see bitcoin hit $40k or $30k anytime soon, but you'll see some more dumping. We know bitcoin always corrects the price after a massive pump but this time it took a different form. Moreover many altcoins are now trying to pump the price of bitcoin using the opportunity to increase. But this time will be best for those who want to invest short time. So if you plan long time holding then you should wait for some more time.
Nobody can tell you the exact value that what will be it and how lower it will go but as halving has taken place so there are hopes for good gain and price will not be reduced as much as 40k$ but it is not guaranteed as the market can change anytime.
The market is not showing greater effects and greater changes because Bitcoin is still 63k$ and does not show a huge pump or huge dump after halving. We will follow the market price and will accumulate more during the lower price and will sell when the price goes higher but it will be easy if you make a target for taking the forward step.