I think my friend needs to change his medication

I have a patient with blood sugars between 250 to 500 and I cannot get the provider to change his medication. They refuse to give them a meal time insulin or Trulicity because their A1c is 8. They have told me several times that an A1c of 8 for a 43 year old man with HTN( it is under control)  is good and the literature tells you not to change their therapy.  I am worried that they may go into Diabetic Ketoacidosis so I want him to start using ketone strip to see if his ketones are spiking. I am worried sick about him and cannot understand how a provider could think that someone walking around with a blood glucose of 500  is fine and doesn't need their medication adjusted to work with this  high blood sugar. I need help !!!!Should I tell them to get the Ketone strips behind the providers back? I cannot get him to go to another provider because they think they are wonderful. Does anyone have any suggestions????

@Ladouglas I obviously don't know all the details of the situation, but are you a doctor? Generally I'd say that the guy should follow his doctor's advice but that sounds a little dangerous. Can you reach out to the doctor for this person?

I am in the same situation with my husband. His doctor won't change his medication either. He is on Metformin and it scares me because there has been recalls on it. His doctor told him the type of Metformin we prescribe hasn't been recalled. Very confused and need suggestions.