In my opinion i think bitcoin will start growing next year. In 2020 i think bitcoin price will be over 10000$ and will not drop so much from that value, and in 2021 i think will have value over 20000$. This is just my opinion so not take this as 100% fixed prediction. All we can do is wait and see how is going and get more bitcoin and hold.
Its volatile currency so it take times maybe years to recover its price. Also no one can give right prediction of bitcoins no one know what will happen Like stock market its bitcoin's nature it have to decrease in order to increase.