It is difficult to predict when this year's Bullish will end, because there are so many differences between the 2017 bulls and today, especially the large number of stock investors who enter the crypto market which of course causes the trading volume of today's crypto market to be greater than in 2017.
But if this year's bullish is not much different from next year's bullish, it is estimated that October to December will be the end of the bullish market, but you must be aware that in May and June, it could be that Q2 2021 will be the end of the bullish market in 2021.