Pour 2/3 of the smoothie into a serving container and then add strawberries to the blender. Blend until smooth, adding a bit more water or almond milk if needed. Taste to see if it needs sweetened. I added 1/2 a small frozen banana at this point.
Place mango into a blender with milk or water and blend until smooth, adding more mango to thicken and more water or milk to thin.