A period of pullback/consolidation will be natural action after a torrid V shaped recovery. That creates the momentum burst kind of setups where stock has first leg and then consolidates and breaks out.
Unless breadth significantly deteriorates the benefit of doubt is on bullish side.
Because so many stocks are over extended in short term a shakeout will be very much normal reaction . A series of breakout failure near high might signal lack of buyers but orderly pullbacks will signal continuation.
Patience will be required to wait for good continuation setup to form. healthcare, biotech, airlines, utilities, restaurants, reits are where they are likely to happen.
Some of the recent earnings winners are also likely to setup with orderly pullbacks as many of them had big gaps due to overall market momentum.