I have experienced a similar issue most of my life. Morning sugars are typically 140, occasionally lower 130, and sometimes 160’s or higher. My daytime sugars are reasonable 95-115 mostly, with occasional high 80’s. Postprandial numbers are mostly “in range” My A1c numbers are reasonable, 5.7 - 6 or occasionally slightly higher. But a few fructosamine tests have suggested that the A1c’s may not be reliable. My primary will not diagnose me as Diabetic, and a visit to a Endocrinologist’s PA likewise is non-committal. I had a dietitian consult who suggested the typical exercise and diet controls, and that meds would probably not change my numbers. I live in a more remote town and Endocrinologists are few and hard to see. I am 65 and my PA will retire at the end of the year. Maybe a new look with a new physician will help clarify this issue.