Hey, welcome back! I remember your name from when you were posting before.
Glad to know you found low carb helpful, and that your babies are doing well.
Re Metformin.
I understand it can take 2-3 weeks to build up to an effective dose. Of course that depends on the size of the dose and whether you start off on one tablet and build up to more over several weeks.
Having said that, Metformin doesn't directly lower blood glucose. Its function is more complex than that, reducing the amount of glucose your liver releases from glycogen, and reducing insulin resistance somewhat. Again, this is dose dependent. The result is lower blood glucose overall, and an improvement in HbA1c, but it doesn't mean that it lowers bg significantly after a chocolate brownie, or pie and chips.
So I wouldn't have too high hopes about Metformin reducing your bg to normal levels. Diet and lifestyle changes will have far more impact.
T2 is an insidious beastie, and while you feel great now, the slight incremental deterioration caused by sustained high blood glucose may take a while to develop - and it may take a while to even notice, because the changes are so slow.
My suggestion would be to educate yourself now, learn the consequences of uncontrolled blood glucose are likely to be, test your blood glucose to realise exactly what is going on in your body, and take steps now (sustainable steps), and then stick to them.
It will pay off in the long run, and at 44 yrs old, you have a nice long run ahead of you.