BTC will very likely surpass previous all time high soon and yet the sentiment is not that much bullish (bitmex funding rate is IMHO the best tool for recognizing current sentiment). I think BTC will continue in current uptrend wave, until the sentiment will be super bullish, than we will see correction. Of course, the second option is, that btc will drop down super quickly, sentiment will become very bearish and we will continue in uptrend after that drop.