The Rams averaged the lowest ever YPC in the SB and still won.
If this were truly a problem it would have bitten us beforehand. I think McVay has this under control. It's a new approach and it takes some gettin used to. A bunch of teams ran for more yards than the Rams, eg. the Bears were #2 in total rushing yards, behind the 49ers, but most of the teams with better and more rushing didn't win a ton of games.
I think we're ok here. I'm more worried about the OLine and DBs and backup QB than I am about our rushing game.