This is an older thread, but I will say my CGM runs 110 on Carnivore. I have never seen it under 100. It’s a slack tide, no highs, no lows, it’s really stable.
I’m interested in how it’s doing now and if you found out what was making your glucose so low? If it’s normal for you, how it resolved…
Steady readings, with no fluctuations, are more important than the absolute value.
Sadly, I can’t provide more input. I’m taking Jardiance, which causes some glucose to be urinated out. My blood sugar is wild. This is from today:
I did have a few carbs last night with a keto meal, but no food since then. The high for that spike was 112, but the spike in the morning hit 110.
But that “high in the morning and low at night” has been what my blood sugar looks like, forever. Just not as spiky. And the overnight highs/lows are insane.
T3 can go down on keto, but that does not mean anything is wrong. Here is an Instagram about this:
I’m going to over step here because this is serious, and I think we need to hit pause on speculation, and you need to bring your data to your doctor. You need to call them at your first available opportunity. You need to tell them what you told us, highs of up to 112 and lows…very low, like you’ve seen 55. That’s going to get you an emergency meeting.
My doctor would have kittens. She would be pulling her hair out going, Niko! What did you do?!
Second - real talk. No more carbs. I’m diabetic too – that’s what this forum is about, support, so if you feel tempted come hit up this group okay, or message me directly and I’ll say: don’t do it!!! Take a pinch of salt with a cup of water, it generally removes the craving for carb. A pat of butter even. There is no safe limit once your pancreas can’t mount a phase one insulin response.
I believe your doctor will probably adjust your medications. Be like Rocky Balboa (my favorite movie) have heart, say no to carbohydrate. Prioritize fat and some meat. You got this!
Thanks. I plan to discuss at my next appointment, because no matter what I eat, my overnight numbers are all over the map. It’s gotta be the drug, because my blood sugar was rock-solid for a very long time, and I have tons of CGM data to prove it. Unfortunately, what I’d need is CGM data before the drug, then CGM data after the drug, and I don’t have CGM date immediately before.
Your doctor just needs to know you’re going low and having fluctuations I would imagine as like Dr. Berenstein says, “it’s a game of small numbers” you don’t want big fluctuations in either direction.
I hope you’re doing well on the diet today and have a great Wednesday!
(Dr. Berenstein’s Guide to Diabetes, best book I’ve read on the topic and he helped create CGM’s and introduce monitoring glucose levels for Diabetics, before him doctors thought monitoring blood glucose wasn’t important, he died last year at age 90 despite being a type 1 diabetic most of his life - he also has some Youtube Videos, highly recommend checking out his book and videos!) 
What concerns me even more is that my blood sugar is going low in the evening. If I eat one meal a day, I get to the low 70s. That never used to happen. It took days of fasting to get that low.