I think if he beats one of WSH/GB/TB(and of course LV) that would 5-3. There’s also the fact he’ll be without Carr for likely the rest of the season. 2-2 without Carr would give him some momentum imo.
If he only beats the raiders I don’t think he gets the job and if he goes winless certainly not. I think the next two weeks against competent teams will tell us a lot more especially how he handles a backup QB in this situation.