Well, 320 is definitely too high! So, in order for people to help here, can you give us a bit more information?
What kind of insulin are you taking 35 units of per day?
Are you using basal insulin (one or two injections a day) and then also counting carbs in meals and using bolus insulin to cover meals?
Have you had antibody and c-peptide testing to determine if you are Type 2 or Type 1? It is not uncommon for adults to be diagnosed with Type 1 now, even though some doctors still think that it is a childhood disease.
Ultimately, the goal of treatment should be to get your blood sugars down into a healthier range, and your doctor may be moving slowly with insulin adjustments, but 320 is pretty high...