I called this months ago and got a lot of **** for it, but it turns out I was 100% right. Dak is hitting the wall at the worst time possible.
Give Dak at least another week. If he struggles again, I think you might need to give Romo the last two games of the regular season to get ready for the playoffs.
If Dak keeps struggling, I dont know where this leaves him in regards to his future with this team. Dak was successful behind a monster OL, Zeke, and because he wasn't running the full offense. Now that he's gotten more of the offense, his play is sliding downhill as he faces tougher opponents late in the year.
I think the real Dak is somewhere between what we saw tonight and his good mid-season run. If you average that out, i'm not sure that's good enough to say for sure he's the future star QB for this team.