I’ve got a (very sweet) older cat who just turned 13, and I’m trying to figure out if I should switch her to a senior cat food. Is there actually a big difference between regular adult and senior formulas? Some brands seem to just slap “senior” on the label and call it a day. Are there certain ingredients or things I should look for? Would love to hear what foods you all recommend or what’s worked for your senior kitties. Thanks!