Opinons vary on the topic. Eat more carbs, no just eat starchy carbs but leave refined carbs alone, Fiber this, fiber that, eat this, don't eat that. I'm gonna be a realist with you, though, Gramps. Short and sweet and nice and easy and gare awn teed gonna work out for you.
Fasting works. By that I mean eat all of your food within an eight hour period each day and fast for the other sixteen. It's easy to stick to and requires hardly any discipline. All that other stuff, although it might work, you're just not gonna stick with. I mean you can say you will, but you won't. Hardly anyone does. It's human nature. After about a week you're gonna say screw this crap.
I go through body transformations all the time. Trust me on it.