Hello @vanin11, I also would like to welcome you to Connect. I'm not diabetic but have had high fasting glucose numbers so that my primary care docs tell me I'm pre-diabetic. My response is usually that nothing has changed in 20 years...I don't have diabetes. In recent years I've changed my diet and worked on eliminating most of my sugar intake but I have my days. When I saw your question I went to my favorite research tool Google Scholar (https://scholar.google.com) and did a search for "high fasting glucose numbers in the morning" and was surprised when I selected show me the newest links by selecting 2017 at the left - the first link was

Acute Effects of Morning Light on Plasma Glucose and Triglycerides in Healthy Men and Men with Type 2 Diabetes
http://journals.sagepub.com/doi/abs/10.1177/0748730417693480
The rest of the links listed for the search can be viewed here:
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C24&as_ylo=2017&q=high+fasting+glucose+numbers+in+the+morning&btnG=
Hoping you find your answer!
John