The only way to compensate for overeating protein is not to eat so much protein. Fortunately, the range from “barely enough protein to prevent kwashiorkor and muscle wasting” to “severe ammonia toxicity from too much protein” is quite broad, so you probably don’t need to worry about it. A reasonable target is somewhere between 0.8 and 1.5 grams of protein per kilogram of lean body mass per day.
Drink your coffee with whatever fat floats your boat. Just leave out the sugar, honey, agave nectar, evaporated cane juice, beet extract, maltodextrin, maltose, dextrose, fructose, glucose, . . . . . . .
The point of eating fat is (a) that it is highly satisfying, so you can eat a ketogenic diet without needing to endure hunger pangs, and (b) that it doesn’t stimulate insulin production the way carbohydrate does. It’s a much better way of getting the calories your body needs than by eating potatoes and doughnuts and drinking Coca-Cola with all that high-fructose corn syrup.