High PP after dinner. Of diabetes!

I am diabetic for the past 13 years and  currently taking glynase mf half tablet a day post lunch. My fasting sugar levels are around 100 to 110 and my Pp is around 140 to 160 post 2 hours lunch.  My hb1ac is 6.5. My pp post 2 hours dinner is around 200 to 210. question is how is my fasting is normal even though I have a high post prandial sugar in the dinner. is this normal or is my medication not right. Note that I take tablet only in the afternoon post lunch and don't take any medication after dinner Next questions I have lost around 8 kgs in the past two years, I am taking a lot of protein however I am unable to put my weight again. Also I am jogging around 8 kilometre a day 5 days a week. is weight loss because of my active Lifestyle or because of diabetes