In a small dish, mix together the oat milk and oats, and set aside (the oats will start to soften as we work on the rest).
In a separate dish, whisk the eggs and set aside.
In a medium mixing bowl, combine the all-purpose and whole wheat flour, chia seeds, flax seeds, sugar, salt, baking powder, and baking soda. Mix everything together well.
To that, add the milk/oat mixture, eggs, and coconut oil. Whisk the batter gently until no lumps remain.
Heat up a non-stick skillet over medium heat. Using a ½ cup as a measure, scoop the batter onto the skillet.
In about 1-2 minutes, you should see bubbles appear. Flip the pancake over and fry for another minute. Repeat this step with the remaining batter. You should have about 6 pancakes.