had been flip-flopping

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of flip-flop.
  flip-flop

  noun

  a sudden or unexpected reversal, as of direction, belief, attitude, or policy.

Related Words

• U-turn
• about-face
• reversal
• turnabout
• volte-face