If you have access to a fax machine, Hammer, write out exactly what you've written out here and fax it to your doctor. Or hand deliver it to his office. Also write a letter to the insurance company, explaining why you need to test more often.
However, tell your doctor you are very disappointed that he's not supporting you in your quest to be more proactive about your health and that you really wish he would go to bat with the insurance company for you. That should wake him up. Be polite, though.
I hope you can get this straightened out and get all the strips you need for your best health!