It's the same amount of relights - boostback burn, re-entry burn, and landing burn. It's possible the re-entry burn used more TEA-TEB than usual because of the high speed, but it's also possible that non-boostback GTO missions re-entered at higher speeds (this is the case at least in flightclub.io's model of the mission). Remember that this wasn't a particularly challenging flight profile for Falcon Heavy, which allowed it to boost back to reduce speed and landing distance from shore.

The excessive TEA-TEB use may have been caused by an unrelated engine issue. In any case, Musk reported the fix is 'obvious'.