I don't sleep that much. I have the advantage of being a short sleeper, 4-6 hrs per night is normal, I find it very difficult to sleep more than 6 hrs.
Hot overnight oats? I always made them in a mason jar in the fridge. My favorite was 1/2 cup of oats, 1/2 cup of vanilla yogurt, 1/2 cup of milk, all in a jar and then fill the rest of the jar up with frozen blueberries and strawberries (cut ones). Close, put in fridge, eat cold the next morning. The oats will have soaked up the liquid and gotten soft. It's a nice cold cereal and quick to pour into a bowl, stir a bit, and chow down.