I believe it is quite possible for Bitcoin to reach even $20k by the end of 2020, with crypto and especial the king coin bitcoin anything can happen. I guess we just need to keep our fingers crossed and hope for the very best of 2020.
Its possible we are still in the Q3, its going to reach the ATH by holidays. We can't say yet whether this growth rate will keep on.
The news about BTC considered as money in DC law will probably be pushing the price to keep moving up. And then there is the defi that also help the cryptocurrency market to be more interesting.