Well, we are no longer talking about Bitcoin at $6000 any longer because as at the time of this post Bitcoin market value is above $8,000 and it may likely reach$10,000 and above before the end of this month of May, 2019.
I'm all positive its going to reach $6k before May. It continues do so since the time it break $5k, I didn't even expect how quickly it got to $5.5k. It may be dumped again but will soon bounce again. I think the rise of BTC is because traders are now dumping altcoins for BTC, the demand goes up and so does the price. A lot are expecting BTC pump but its still not confirm bullrun because altcoins are being left behind here.
I agree with you, there may be many people who move their altcoins to bitcoin so that the price of bitcoin has increased, but I think bitcoin will drop again in the near future, and then bitcoin will rise again in June or July.
I don't the drop in the near future you speculate will come to pass before the month of June or July and if there will be any price decline it will be just a little correction which ya normal situation.