I do 30 mins of running or 3KM daily:
1.) 3KM - Treadmill setting is 3 mins speed 5, 3 mins speed 5.5 all the rest speed 6 t 6.2 (I change it up a bit, this gets me to 3KM in 30 mins)
2.) 30 minutes - Treadmill setting is speed 5 for the whole walk.
I run for 2 days then walk for the next 2 days and plan to switch it. The Run brings my Sugar Levels down better than the weightlifting because I don't focus on the lifting
I also read that strength training is good for Type 2 Diabetics; so what I do is to 3 cycles of the bench press, 1 cycle of bicep curls and 1 cycle of my back. I don't do too much because I believe I need to lose weight and the strength training is secondary to the cardio right now as my Triglyceride Level is 428, the range is 20 to 200.
On a personal note; I have not be diagnosed with Diabetes, yet, but my FBS was 4 points over. My doctor said, change my lifestyle, eat right and exercise and we will do the HBA1C, the best case scenario is I am Insulin Intolerant or Pre-Diabetic; so I am in the gym everyday and thankfully, my post eating has dropped down to normal levels and my FBS is all within the normal range.
Hope this helps.