fasting bg measure

I eat very strangely.  I don't hardly ever have an apetite during the day so I need to remember to eat.  I recently got a type II diabetes diagnosis.  I also have hashimoto's thyroiditis (hypothyroidism) and thyroid cancer.  Now my doctor wants fasting numbers when I get up in the morning.  I have looked around the internet and most say fasting should be at least 8 hours.  My problem is is that at night I never sleep all night and I never go without taking a couple bites of food when I wake up at night.  At that time, I will feel extremely hungry but I never feel that way any other time.  So needless to say, I don't go 8 hours at night without food.  I do, however, go 8 to 12 hours during the day without food.  So, do I take my fasting measures during the day instead of morning?  Does sleep play into fasting in anyway?

Joan

When first diagnosed in March, my A1C was 7.7. Two weeks ago it was 6.9. I take one 500mg metformin extended release in the evening. Most before meal eating numbers range from 100-130's. After meal now range from 140's to 170's. When first diagnosed, my 2 hour after meal numbers were in the 200's and premeal numbers were around 170-180. From diagnosis in March until now...I have had two surgeries (thyroidectomy and neck dissection-for thyroid cancer), started on thyroid replacement meds, get IV iron weekly, take magnesium, potassium, calcium and vitamin D for deficiencies in these areas. I have lost 30+ lbs (not trying, eating no differently), I really never eat a major meal. I tend to take a couple bites of something throughout the day, every 2-4 hours; however, this doesn't start until mid to late afternoon. Before that, I eat nothing. In the past, when looking at food consumption, I rarely eat over 1000 calories a day (I am still 100 lbs overweight--hashimoto's had a lot to do with that), and I balance carbs and proteins and do not do excessive carbs.