I think probably yes, you should buy Bitcoin during the halving. But one thing I do hear is that we shouldn’t store our Bitcoins in exchangers during the time of halving, I don’t know reason why, but during the last halve I left some of my Bitcoin in an exchanger and nothing happened to it. Why said you should by Bitcoin then is because the price usually drops then and after it starts going up again just like what happened during the time of BCH; the price dropped and within few hours it started going up again.