Sounds like a great initiative! Diabetes can be a huge, insidious emotional burden, and it's such an invisible one. This kind of service would make a big difference.
I'm also a big believer in education, though. Many people who are struggling with diabetes are struggling in part because they lack the understanding or motivation to improve their management.
Yes, there is a fine line between educating and offering medical advice. That should not be an excuse to stand well back from the line. It should be encouragement to learn to clearly identify that line and learn how to get as close as you can to it without crossing it. Because the closer you can get to it, the more you can help people reduce their suffering!