Planning to switch dogfood.

Hi furmom and furdad! Currently my 3months old Pom naka hollistic puppy sya. Pero hindi sya ganun ka excited kumain, unlike sa previous diet nya na topbreed. I’m torn kung mag papalit ba ulit kami ng dogfood, or mag add na lang ako ng appetite booster. I’m worried kasi since di nya masyado gusto yung food, may times na may yellow vomit na sya.