I may suggest you just buy and accumulate more as much as you can if you believe that bitcoin will bring a massive profit by waiting on it.
Yes, that is, hold and wait and never sell if your profit was not there. Never follow your emotion if you have been feel panicking. Because I have doubt that only whales who are manipulated at this price now, they can able to play the market because they have a lot of money to play with and at the same time they will earn. But I believe that this year will bring a good future price of bitcoin after the reward halving will officially be finished.