One of my questions is how much time does Dak spend in the film room? If he is spending enough time watching film? Who is watching it with him and who is diagnosing the defense? Is he making the right read according to the coaches, which is actually the wrong diagnosis?
One of the reasons for late throws is a lack of confidence in the route or the read. He should know where he is going with the ball before the snap and it may not be the primary route the on the play call. He seems to focus on the primary route even if it is the wrong read, which makes him hold the ball, then he is late on his throw all adding up to inaccuracy issues. I don't think the coaches properly prepare him for the game because defenses defend us so easily.
Two guys blitzed him in the Houston game and the hot route was an out route into the flat. The hot route should have been a slant behind the blitzing defenders. I think an experienced QB or prepared QB adjusts that route and destroys that blitz, but that isn't something he or the coaches see on film. We should hire Payton Manning to sit in the film room with Dak for four hours a day, everyday ,the week before the game. Get a coach in here who doesn't take what the defense gives them, but exploits the defense even if it deviates from your core scheme.