In the big picture saw the game plan for this season being: (a) accept the D as being ineffective to start but expect it to improve; (b) expect the special teams to win the battle of field position and have a minimum of big plays positive or negative - get the FG almost always the opportunity is there; (c) develop an O that can control the tempo with minimal mistakes and keep the D off the field with the running game and possession passes. Overall expected the team to be a lot better at the end of the year than the start.
We are doing poorly across the board with the talent and experience we have. The biggest unexpected concern for me is similar to yours but not exactly the same. Our running game with the folk we have in general should be a lot more effective at moving the sticks and keeping the clock moving. Was at the Nevada game and saw a distressing pattern, an O without rhythm with the result being some big plays mixed in with a lot of really ineffective ones - pretty much the pattern for all our games.
Am not a big fan of "change the scheme" as think effectiveness is more about talent and finding mismatches on both sides of the ball. Only rarely have I seen a dominant scheme (aka the wishbone when no one knew how to defend it).
On O it really looks like our biggest problem is the inability to execute correctly play after play with the result that we have to go for the big plays and even when we get them the clock barely moves. Expect that we will find our style,however, so far our search has left the tempo of the game up to our ST and D with the result that a good ppg average has been negated by the other two phases (esp the D) making just about every game an actual or potential shootout with a handful of plays making it a W or L.