I'm doing SS+ this time round as since I last saw my CDC, they've changed the rules... So if I had wanted to do SS (3 packs) I would have needed to take a form to my Dr and get it signed, it's the same whatever you weigh. So I opted for SS+ - 4 packs plus 200ml skimmed milk a day, which still keeps food out of the equation.
I would have liked to have done SS, but I did 2 days of it before seeing my CDC and felt very lightheaded and weird, and feel so much better on SS+ and it's lovely to have milk in my coffee!