Is a protein shake containing 20g protein enough after a workout late at night?

I don’t like eating heavy meals at night but my workouts seem to only finish at like 9/10pm. I know you should have something with protein and carbs after the gym but is a protein shake enough on its own? My one contains 20 g protein per serving and I combine the powder with milk and water. Obviously I eat other stuff during the day…

Is a protein shake containing 20g protein enough after a workout late at night?
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