I'm on Metformin too, but it is the slow release form. I switched a while ago becaue I would suffer from headaches 24/7.
How do I take Metformin? I have tried many diff ways and what works for me is this : Halfway during my breakfast and halfway during my supper I take Metformin.
If I take Metformin on an empty stomach it doesn't agree with me. I end up bloated, and with terrible gas.
I read that Metformin works better taken along with food. You might want to check out this link about meds : http://www.drugs.com/ - Very useful link, and not only for Metformin.
I am surprised your doc told you to take all your meds at once, before bed. Won't you go low during the night??!
For T2s fasting sugars seem to be a common problem. It is certainly my problem! Although for the past few weeks fasting sugars have not been a problem. They are between 5 and 6.2 mmol/L (90 and 111 mg/dL for you).
Before bed, let's say 30 minutes before bed, I have a small protein. It seems to do the trick for me. I have a small piece of cheese with a small apple for example. I eat healthy all day and exercise but if I don't have my small protein before bed my fasting sugars will be higher.
Your readings during the day seem to be very good! And wow! Your A1C is 5.5.
Hope this helps you a bit.
The very best to you,