So I've been feeding Itachi Fancy Feast grain-free pate kitten food (wet) since I got him with the very occasional meal of dry kitten food if I will miss a meal and have to be gone a longer time. He finishes his meals but doesn't seem hungry or like he's begging for food, stools are good, nothing is up. But I've read some posts on here where people mention food rotations? Should I be rotating the brand he eats for any health reasons? I realize there are higher quality brands then what he's getting but for right now a middle-of-the-line food is what my budget can do. TIA!