I don't see how the increase in price had anything to do with the halving. In this graph I read a very stable price before and after halving, followed by an exponential bubble, a collapse, and a new normal.
Since then the price went up, and down, and the past year went up again to end on the current 400+ (although it has been higher in the past year). Everybody expecting a large effect of the halving must have influenced the higher price, so I see no reason for an increase after the halving. If it happens months later, it is the "normal" variation again.