Thanks, Edith. I’ve never heard of that podcast, but I’ll listen to this.
In fact, I was just thinking of using apple cider vinegar at night to lower my morning blood sugar, but it’s been “high” in the morning for years. But then it goes down all day, like this:

Now, that was a day where I was going to fast multiple days, but my blood sugar went too low the first day (which is what this is). I took a pin-prick test and got 74, so my CGM wasn’t too far off.
But that “high in the morning, then goes down all day” is what’s been happening for years. Would lowering my blood sugar in the morning help or hurt? I’m not sure.
Edit, the bump at before 8pm is when I decided to eat dinner. No idea what that bump is near 10pm. I think it’s an artifact of Jardiance, which I’m on due to an error in signaling in my heart. It seems to delay highs sometimes, and also cause lows (you urinate out glucose). Unfortunately, other than it causes one to urinate out glucose, I can find NOTHING telling me what that means. But I think the strange ups and downs, particularly at night, are caused by it. I can’t prove it though.