Whisk almond milk, collagen, and PB2 until smooth. Divide evenly into 4 containers.
To each container, add 1/3 cup rolled oats. Submerge/stir the oats with a spoon so that all the oats are wet.
Microwave blueberries for about 2 minutes or until they can be crushed easily with the back of a spoon. Mix in chia seeds, then spoon on top of the oat mixture.