First off, congratulations on losing the excess weight and understanding how to get your health back in order. To do this at 65 yo is admirable. As far as your preprandial (fasting) glucose levels you're still considered prediabetic. Prediabetes is 100 to 125 mg/dl preprandial. Try walking 1 hour after eating when glucose levels begin to rise. I find this very helpful in reducing my glucose levels. Test before your walk to get a reference point then 45-60 minutes after when your body has calmed down.
Its been over a year since your last A1c. I would suggest you get another one soon to determine how well you've been managing your glucose. I get one every six months for two reasons; one, to keep me in check and; two, to keep my PCP happy and off my back.