Bigandbloated:
I'm doing this capacity-stretching right now, mostly by doing something like OMAD or Intermittent Fasting and putting most of the meals I would have into a limited period of the day. Generally it involves eating as much as possible, but never getting to the point of nausea (especially since I usually have to exercise later on).
I'm hoping by increasing my capacity it will lead to a bigger appetite and me being able to enjoy eating more, since right now it just feels like a chore.
I mean, that's one way to do it, yes. And there is nothing wrong with your way. But, maybe if you spice things up a little, it be more fun.
Since you are capacity training with food, it's best to make the eating experience something to look forward to. Maybe a specific kind of food you enjoy, or explore foods you've never had.
You could also make a game of it. Put on a movie or show and see how much you can eat while you are watching. Touch yourself while you eat. Get more food than you can eat, and challenge yourself to see how close you can get to finishing your food.
Make it fun, and you can stick to it better.