So I tried this at a friend's request. After 4 hours I'm bored to tears because I'm not a huge fan of survival management type stuff outside god games. Long story short - is there a mod that removes hunger, flashlight batteries, and sleep aside from time skipping? I like horror but I don't easily get spooked by it so I find a lot of the early game just a giant damn chore.

In fact, I wouldn't call this game a survival game. I don't like this genre, I really don't like it. But in this game, I don't even notice that I need to carefully monitor Kel's condition. I don't have any problems with this.

As a last resort, you can fill the boxes with food to the brim through other saves and the mailbox, then you don't have to worry about hunger. There is a sleeping bag for sleeping. And you can buy a lot of batteries and charge them. Or regular batteries, if you don't care about throwing away empty batteries anywhere. By the way, instead of a flashlight, you can use different lighting devices that are sold in the store, for example, glow sticks or even a spotlight.

If you get bored by just needing to stop and eat or sleep occasionally, I feel like this game might not end up being for you. There will be a lot of downtime with absolutely nothing interesting happening, so if you are in it solely for experiencing the horror, you might not even end up liking that part.

If you really want to, you can use some kind of file editor to set your stats to an absurdly high number, but that might come with some consequences. If you set your hunger high, you won't be able to eat food items even if the game wants you to. And if you set your stamina high, you won't be able to sleep at all.
Battery power doesn't have any consequences, but I personally feel like the game provides more interesting ways to not really need to worry about it than just giving yourself nigh-infinite battery power. I personally use the crank flashlight, you need to stop to charge it again occasionally, but that's just a short bit of holding a button before you are back in action.