Its depend on your your own think. However these days bitcoin is going high and this is profitable for everyone. after halving price may be came down. So profit of investing in BTC depend on time duration.
Right Time is really important.. this is the time of Saving not for investment. if you invest your money some where you can't reach ROI at the time of halving, but if you save your money then you'll get solid profit when the price will increase.
so decide wisely. I am just saving my BTC and I suggest everyone to save and wait for halving.
but it doesn't mean that investment don't worth. you can invest also if you think you can get your money with profit back at the time of halving.