It is my understanding that the reason it is called “3 meals” is because we are required to eat 3 meals on Shabbos, but don’t get “credit” for the first two until we’ve eaten the third.
Mod.80
If you eat Fleishigs by shalosh seudos then what do you eat for Melava Malka?(left overs from shalosh seudos?)
Why are you assuming he eats fleishigs for lunch? I know a lot of people who don’t.