If you are severely insulin resistant, whether T1 or T2, it is appropriate to talk to your doctor about medications that improve insulin sensitivity. Metformin and Actos are the most commonly known and these can be taken in combination.
A low carb diet as suggested can help with the blood sugar rise after meals.
But I'd also like to suggest two things for you (ok, actually three things). First, if you are regularly experiencing poor control, this can lead to increased demands for insulin. High blood sugars cause insulin resistance and high insulin doses also cause insulin resistance. If you can truly "normalize" your blood sugars you may find that your insulin requirements drop markedly.
Second, it is possible that your insulin resistance is in fact some sort of systemic infection or inflammation. You should work with your medical team to make sure you don't have something like gum disease or an infection.
And third, don't give up, keep working on this. Have faith that you can make progress against this. We have members here who have had severe insulin resistance, had to switch to U-500 insulin and through hard work they have been able to really improve their control and reduce their insulin requirements.