Oh yes. Exercise really helps. I have started a 30 minutes a day regime on the treadmill and sometimes another treadmill session late afternoon if my BG is still high. I know when my BG is high with the tiredness and having to sleep most of the day. By high I mean last week my BG was, wait for it....19. Now that is HIGH folks. Don't really know why BG suddenly went out of control. I take Metformin religiously 500mg x 2 a day and keep it on my dining table in pill box. 7 years a diabetic type 2 you would think I would be completely under control by now. But I also realized I was very dehydrated and started drinking water a though my life depended on it...and in fact it did. Morning readings are normally 9 plus, but after breakfast and treadmill session, it can come down to 6.3 or so.
So, yes, exercise, and staying hydrated is very very important. Good wishes Rosemaryx. Don't be downhearted, you can do it !