Watch man vs food.
That guy, even though he’s NOT IN SHAPE AT ALL, has some great tips for getting down large quantities of food, psychological tips, which foods to eat first, checking out the satiety index for example, might give you a idea of what food to eat first on your plate.
If you Also, for example, if you make a giant bowl of oat-meal, casually eating at it over time probably isn
t the best option. Get a big spoon, shovel that into your mouth, chew, swallow, repeat until it’s gone. AS fast as you can while maintaining saftey.
You want to chew the food and not choke, but every second longer it takes you to finish the meal, it becomes harder.
There are some recreational drugs that increase appetite as well, making taking in mass quantities of food easier. If nothing else works, maybe cannabis will.
Outside of that some foods are just super dense in calories per serving that make taking in 1000 calories not all that hard. A high fiber pasta, with 2 cups of pasta sauce, (good pasta sauce with vegetable servings) a little olive oil, that’s 700-800 calories right there.
It’s not really that hard to put in a lot of calories when you eat things like Pasta, also for example some OATMEAL brands may have x2 the calories and protein PER SERVING of another oatmeal brand, so look around at foods.
Robinhood oats have x2 the calories protein of compliments oatmeal, for example.
Little things like switching to WHOLE MILK, can make a big difference. plus the IGF in the milk is probably going to be beneficial to workouts anyway.
All natural peanut butter is also a pretty easy way to increase caloric intake easily, a small handful of pretty much any type of nut or seed, just a lot of little things add up fast.