In general, milk - even whole milk - has carbs and should be avoided.
Dairy is another way you can boost fat macros with little to no carbs and moderate protein. In general, milk - even whole milk - has carbs and should be avoided. One cup of whole milk has 8g fat, 12g carbs, and 8g protein. Even ultra-filtered whole milk has 8g fat, 6g carbs, and 13g protein per cup. Heavy cream is best. For all dairy products, always buy the full-fat version: