Question: I already mentioned this once here but wanted to get an opinion after offering more detail.

I've been monitoring blood sugar when i noticed i had a fasting glucose of around
120 -130 on several different days.
I went to doctor and he did an A1c and it was 5.6. i did an A1c at home 2 - 3 weeks later and it was 5.1
We are currently without insurance for 15 more days due to wifes switching jobs, so I'm wondering why the high morning glucose. My doctor said felt certain it's not due to diabetes or pre-diabetes, he said its because of my diet/ sleep pattern.
I have no symptoms or anything causing concern other than seeing those higher FBG.
i'm a fireman/ medic and work 24 hour shifts. I don't eat breakfast very often and my diet consists of morning coffee and around 3 sodas per day while running calls. I eat one large meal at dinner (around 8-9 o'clock), almost always heavy carb with a desert ( carbs and sugars are probably 200-300g for this meal) and I usually fall asleep within 15 min. We make calls during night so I average about 5 - 6 hours of sleep per night.
I already got the talk from my doctor about my current diet and how it isn't good, so I can change this for the future but due to job this is how its been thus far. Just being honest and I already am making adjustments.
i have checked my glucose levels quite a bit at home and my response to carbs sugars, even at higher levels seems normal.
my average daily random glucose level ranges between 80-115( normally around 105).
While fasting has been sometimes high my evenings before meal are almost always no higher than 85.
my average postprandials are normally between 110-130

because my doctor said I was okay and seeing my response to sugars is pretty normal, I've done a few self tests because I'm very curious about morning high BG. Plus I can't get true glucose tolerance by a doctor right now and not sure if I even want to because of pre-diabetes diagnosing trend that we've seen in the field for the last few years when getting patient HX on calls.

I listed them below

TEST 1:
fasting - 118
preprandial - 108
consumed - (70-80 grams of carbs/ breads within 5-7 min)
postprandial 1 hour - 134
postprandial 2 hour - 113
postprandial 3 hour - 96

TEST 2

fasting - 124
preprandial - 93
drank large morning soda within 5 min ( 80 grams of sugar)
postprandial 30 min - 189
postprandial 1 hr - 170
post prandial 1.5 hr - 133
post prandial 2 hour - 93
postprandial 2.5 hour - 78
postprandial 3 hour - 77

I know these are different sugars thus the different tests.
The only test that shot my sugar up was the soda test which I expected.
does my insulin response look normal?
thanks for response.

Thanks for response. Im wondering if the fasting glucose is high because of eating such high carbs going straight to sleep, plus sleep pattern.
First question is " could very large carb load cause higher morning sugar"
2nd "If i am experiencing "dawn phenomenon" type highs, could my sleep be causing that"?
Or a combination of both?

Yes, i dont think its XXXXXXX phenom either.
I have noticed when i eat a normal evening meal containg around 60-70 grams of carbs and wait at least 1 hour before sleep, my fasting glucose is in the low 80's regularly. Ive only tried this a handful of days but all of the days i have followed that mentioned above, my FBG is in the 80's.
Not sure if that tells you anything.
My insulin response does appear to be solid though.

Sorry to ask another question.
So does it seem im indeed not prediabetic either?
I understand being healthier but when you say "to prevent diabetes" do you think my readings indicate im fine and id best be served getting healthy or i look like im very early on in blood sugar issues?
Ive read that while A1c and fasting blood glucose are used as markers to check for blood sugar priblems, the insuline response is the standard to actually see how the body trulyhandles insulin.