Your forecast would have more credibility if you provided a rationale and or a timeline. Anyone can say anything will happen within weeks.
I am surprised that bitcoin has not been able to return to its post USMS sale highs, so it should not be too difficult to come up with a good bear story.
We recently had a flash crash to below $350 on one exchange, but it only lasted minutes. If we get another within the next month he will proclaim himself right.