The book on the PH Miracle for Diabetes recommends at least 4 liters of green drink every day. The best way to get that is to liquefy green veggies such as cucumber, spinach, kale, green spring mix salad greens, celery etc. mixed with a mango, apple, carrot, avocado etc. / Add enough water and a few ice cubes to liquefy the mixture so you can drink it.
I PREFER the Vita Mixer which makes making the green alkaline mixture easy.
PH Miracle book (page 68 and 69) recommends 1 litre of green drink for every 30 pounds of body weight. That means if you weigh 260 pounds, you are looking at around 8 or 9 liters of green smoothie a day. If you don't own a Vita Mixer or Ninja Max system or something similar, you can accomplish a lot by mixing All Day Energy Greens or one of the other barley grass combination powders into a glass of cold water several times a day.
JUST AS IMPORTANT is to get off any and all diet or regular colas and carbonated soda. The PH of a diet coke or Pepsi is around 2 and drives your body into an acid state and really messes up your interstitial fluid which s the fluid that bathes your billions of cells.
You MUST get some aerobic exercise in every day and I recommend lots of walking for starters. You also need some weight resistance type of exercise like push ups for core strength.