Hi - yes carbs do raise blood sugar! If they didn't I would be eating more carbs! Have had to really restrict myself. Testing myself 2 hours after a meal really help me see which foods are causing my blood glucose to rise the most. Well your A1c isn't too bad at 6.2. Mine was 6.4 and I only weigh 100 pounds and on a strict diet, but sometimes I have been cheating with pretzels and bread.
To me, you are a fairly new diagnosed T2. so you are still in the honey moon phase with T2.
basically your today fasting reading of 146 is the result of your last 2 or 3 days carb intakes , it's simple explanation for any new T2.
Less carb intake results in lower fasting reading.
Good luck
More invo, am type 2 diabetic for 2 to 3 years now. on 500mg metformin twice a day. Last a1c was 6.2, lost weight 270 to 245,still working on that. its just once in a while get a confused out of it feeling like this monrning, blood sugar was at 146 when checked . this could have be a drop. levels range between 90 to 180 depending on diet.
and yes carbs raise BG ALL carbs even "the good" carbs raise BG