In my opinion, Bitcoin would bubble again at the end of 2018.
With a price under 7000 the possibilities that bitcoin will bubble at the end of 2018 seems to be very low, after all we are already on April and bitcoin is showing no signs of recovery, we know that bitcoin is able to gain a lot of ground in a very short amount of time but right now there is not reason to believe that the current market conditions are going to change that fast.