If the BCGS model is accurate, brain and periphery communicate continuously about glucose homeostasis and a change in the brain can alter insulin sensitivity in the periphery. Read this review, and you'll be up-to-date.
Studies looking at add-on treatment with SGLT2 inhibitors show their effects on glycemic control to be roughly additive. Here, a concise look at clinical trial results plus guidance on renal dose adjustment.
Online support groups, YouTube videos on injection technique, healthy lifestyle sites--good patient information abounds on the Web. But so do the bad and the ugly. I try to help my patients discriminate; I'm not always successful.