High amount of carbs in the morning will increase your blood sugar rapidly and your body will use it up quickly, leaving you empty and low in energy. The reason for this is that carbs are digested and absorbed rapidly in the absence of protein, fiber or fat. Oats have fiber but very little protein and very little fat. Instead, you could start your breakfast with protein and fat and minimize the carbs.
A grainless bowl is a great choice! Utilizing healthy seeds and nuts with some berries. Chia seeds are a great source of fat, fiber and protein and they absorb 8-10x their weight in water. This is why chia seeds are a super-food! Add some freshly ground flaxseeds, some quinoa, nut milk of choice, protein powder, cinnamon, berries and nuts and you will have a breakfast that will leave you balanced and full of energy. The best part is that you can put this together the night before by soaking the chia and flaxseeds in nut milk and in the morning all you have to do is add the rest and go. I like to put this in a pint size mason glass jar for easy storage.