> This is called “closed loop” or “artificial pancreas”, and getting one officially is very hard or impossible: not FDA approved yet / you need to be part of an university study to get one / … It’s one of those things that “will be here in 5 years”, they say every year for the past 30 years.
These exist now. I've had one for a few years now. Medtronic 670G.
> My treatment is usually: keep the Freestyle Libre app on my phone open as much as possible and when I see my BG’s getting high, I inject a small amount of insulin. How much? No idea. IT’S ALL VIBES.
Your correction factor is
CF = 100 / (Total Daily Dose).
To make a correction you do
Additional insulin to administer = (current blood glucose - target blood glucose) / CF
Now, even after doing this you'll still have blood sugar spikes and dips but this should get you most of the way there when combined with diet and exercise with very little "vibes" involved.