Teams get up on the Bears early on in games and that leads to this "garbage time" stuff. I do think that until Caleb starts putting up numbers in the first half like he has been later in the game, its always going to be a quesion of is it the game plan, the offense in general, or Caleb himself. All three are fixable, with Caleb being a rookie and likely to improve.
That, and the Bears QB will always be suspect to the general public, until they clearly arent.