@retiredteacher If you have a health club, Y, or facility as part of a local hospital, you might be surprised at how many people your age and older go to exercise. I go to a health club and there are many people there in their 80s. I myself just turned 71 and go about 6 days a week -- three for water exercise, and three in the gym. Oddly I don't think of it as being for my mild diabetes but I guess it must help too.
I have had diabetes now for at least 12 years, maybe 13 or 14. I believe it was the first indication of my silent cirrhosis which the hepatologist told me I probably had for about 10 years before it was diagnosed. My A1c is good so my endo only has me checking my bg once a week, two hours after a meal, and I take no medications.
I do really miss some of the starches that I limit and of course the sweets, but I eat most meat and fish, just not fried.
If you actually do want to lose weight, I suggest using myfitnesspal.com. You keep track of EVERYTHING that you eat. It helped me enormously. I lost a lot of weight.
JK