Let me give you a hint, that's the highest shot attempt since the 2013 finals against the Spurs. He's only shot more than that 4 times in the playoffs since 2008.
That's sort of the problem, though. LeBron has not been challenged hardly at all in this series, which is why he's been able to attempt so many shots without using up much of his energy, allowing him to also play a lot of minutes.
LeBron can get a good jumpshot or get to the rim pretty much at will against this team.