Great that you feel better. You have been eating low carb since 2011? And you recently wrote your Hba1c is 5.4...is that the same? Maybe update us on what you have been doing recently. Did you stop LC and recently restart Keto? Since you say your knees are better

But if you have been LC all this time and have that great a1c, consider Dawn phenomenan as possibly contributing to the higher fasting BG. If you have had high BG for a long time, it will take a while to come down and some find adding IF helps. However, Dr Bernstein gives importance to spreading those 30g carbs in 6-12-12 meals, the 6 for breakfast to account for that dawn rise, while Dr Westman is less structured..keep total carbs, not net, under 20g per day, OMAD is OK.
https://www.dietdoctor.com/the-dawn-phenomenon