It is normal for blood sugar levels to fluctuate throughout the day, and they can be affected by a variety of factors such as the type and amount of food consumed, physical activity, stress, and medications.
The condition you described, where your sugar level is 6.5 two hours after eating, but 8.5 in the morning, could be due to the phenomenon called the “Dawn Phenomenon.” This is a natural process that occurs in the body where the hormones that control blood sugar levels change during the night, causing the sugar level to rise in the morning. This is a common phenomenon and is normal for some people.
However, if you are concerned about your sugar levels or are experiencing other symptoms such as frequent urination, excessive thirst, blurred vision, or fatigue, it is important to consult with a healthcare professional to determine the cause and appropriate course of treatment. They may also advise you to check your sugar levels more frequently or make changes to your diet and exercise routine.