At 8:30 AM BS was 141 at 12:30 with no food it is 138. had light lunch. walked 1 hr tested 18:30 test is 138

I am type 2 diabetic taking 1500 mg metformin once a day. try and get out and walk daily between 30 to 60 minutes a day. I skipped breakfast this day and was not going to eat until I dropped below 120. My wife insisted that I eat. lunch was home made chicken cordon blue about 4 oz. no rice. half a cup of peas and about one 1.5 cups of asparagus pea pods and water chest nuts. will be seeing doc in 2 more weeks for quarterly a1c checkup.