Harmonica patterns are usually used accompany with other technical indicators to increase the probability of a valid entry, e.g. the 21MA.
However, BTC is running under daily 21MA for 3 weeks now, and there's no strong support under D.
I would wait to see if it climbs up 21MA and that is a buy signal.
As we can see on 4h chart, the RSI(2) shows oversold which usually indicates that a temporary bottom is forming.