Second this. Our cat was clearly able to outlast my patience. At one point early-ish into our cat's tenure in our home, during a particularly persistent meowing session I said to my wife (jokingly!), "holy shit I'm going to kill this cat." To which I quickly had the sad realization that some people probably do abuse or kill their pets. So I decided to check for advice from the ASPCA.

All the kitty guides on webbernets say, "be firm and don't give into kitty's demands." Whereas I read on the ASPCA website, "buy an automated feeder."

Guess which worked? Happy automated cat feeder owner, and our cat mostly doesn't drive me insane around feeding times.

For reference, I also own this model of cat feeder and have not needed to harden, though I do have it wedged up next to a wall to lessen risk of tipping.