Have a shared shopping list with the family. Teach your kid to put the milk on the list after they finish it. Be at least somewhat aware of how old your food is. Problem solved. Somehow we managed this model for a century.
Somehow we also managed to get by before we had pretty much any kind of technology. Somehow we managed without trains, somehow we managed without telecommunications, somehow we managed without refrigeration, somehow we managed without websites and forums.
Maybe we could do better. Maybe we can automate this as well.
Yup, end game is becoming a Guild Navigator. Obese, immobile, suspended in a tank full of dopamine. Why beat around the bush with all this doing stuff and using our limbs or god forbid thinking? Straight to the neurotransmitters, pure efficiency.
I take it you don't bother writing things down, wouldn't want to have the paper take the place of your own memory turning your brain to mush right?
And obviously you just walk anywhere and everywhere. Wouldn't want your legs to grow feeble and useless. Even riding a bicycle is reducing how much exercise you'd get otherwise, it's simply a tool for the weak.
Or you didn't finish the milk, but didn't realize it had gone bad until after you got home with ingredients for a meal depending on milk.