When you have a piece of meat or a vegetarian main dish, cut three bite-size pieces at a time. Do not cut up the entire main dish at once, like your mother used to do for you when you were still sitting on a phone book to reach the table.
Some people will say only cut and eat one piece at a time. WhatEVER! Uh…I mean, that would be fine.
If you are eating American style, set your knife down horizontally across the top of your plate and switch your fork to your right hand (lefties, flip your fork over) and scoop up the pieces of meat, one at a time. If you are eating Continental or European style, keep your fork in your left hand and spear the pieces of meat, one at a time, with your fork tines down.
Courtesy of Culture and Manners Institute