Textbook Monthly Retracement? (Hope not.)

BTCUSD

Are we just seeing a textbook retracement?

RSI ticked from overbought.
MACD sharp downtrend.
Sell volume confirmation.

Swing high to swing low gives a .786 retrace to $3142.44, or a .618 retrace to $5439.40.

Still biased bull.
(First idea, new trader, rip me to shreds. lol)