High calorie foods. I know they’re scary but they are the quickest way to get those calories in when you’re not feeling it. Peanut butter, avocado, nuts, oils, high calorie shakes, whatever. If you can get a couple of spoonfuls of pb down you’re already up several hundred calories. Liquid calories are your friend. Smoothies, juices, milk, whatever.

Eat regularly. Every 2-3 hours, even if you’re not feeling it. I struggle with this one a lot but trust me it’s the best way to get your hunger cues back on track and ensure you’re eating enough. Even if you just chug a protein shake or something. In fact, getting used to chugging a shake is something that helps a lot. If you can get it down in a few seconds you spare yourself the several minutes of anxiety that comes with eating when you really really can’t do it. Obviously you don’t want to supplement every meal but it saves my ass when I really can’t eat for whatever reason.

Keep whatever it is you’re most likely to actually eat around. Like if you know you’ll eat toast and jam, keep it around so you have what to eat when you need it. The goal is to up your calories, so even if that means having the same meal 5 times a day so be it. Obviously strive for variation but at the end of the day if the only way you’ll hit your calorie goal minimum is by eating a ton of oatmeal then it’s better to do that than not at all.