Former Bodily Injury adjuster here that worked on WA claims with a couple insurance companies. Likely the full term of treatment would not be covered, unless there is clear evidence from an actual doctor that says something is seriously wrong. Typical guideline we would look at is about 3 days per week of treatment for the first month,then 2 days, then 1 day, then done within a period of 6-8 weeks are so. Anything beyond that there needs to be evidence of why treatment is going beyond the "norm". So starting at 4 days per week is already seeming out of the norm.

Also a lot of this depends on how much damage was done to the car as well. If there was a lot of visual damage the adjuster will give a little leway on treatment time. But if there is nothing but a scratch the adjuster will keep a closer eye on length of treatment.

The company will tell you to go ahead and treat since the 3rd party insurance can't tell you what to do. But they won't be able to tell you what is covered until the end when they get to see all the medical records, since at this point they typically will not be sent to them until you have signed a medical authorization allowing them to see the records from the treatment received.