Hi Winni.. l can confirm the dexcon is very accurate with the A1c .. l took my readings to my clinic and they were bang on .. on both a 3 month visit and then a 6 month visit.
I am type 2 and last year kept on a low carb diet and watched my levels drop and stabilise... taking Doctor's Best, Best Stabilized R-Lipoic Acid, 200 mg, 60 Veggie Caps were a great help leveling out mmols
Dont get too hung up on your goals too much as they come naturally if you take what l did.
My A1c is now down to 6% 7.0mmol average
Keep going with it