Engaging in a little necro-threading again - still catching up - but I posted about Skin Grip patches back in December. They were highly recommended by the wife of a good friend who manages an endo office, has D herself, and swears they prolong the life of the CGM. They’re not expensive and work fine, but I’ve had mixed results in terms of prolonged life. (In fairness, I haven’t used them religiously, so I don’t really have a good data set by which to form a reliable opinion.)