Haha oh believe me. I totally get it. I’ve been at the 4000+ cal range for several years. Eating the way we want to is legit painful sometimes. Tuna packs take up less room, and usually publix, Walmart, or target has them on sale for $1. That’s when we stock up. Like buy 20-30 of them.
No easy way to do it. Your lifestyle adds a bit of a complication. But… If ya want it bad enough… you will find a way!