Things I learned the hard way- For quicker formula preparation, consider getting extra bottles. Wash them and let them dry, then portion out the proper amount of formula powder into each one, cap them, and put them in the cupboard. You can also portion out the right amount of filtered water into clean small water bottles or sealed glass bottles or jars and keep them at room temperature for short periods of time. When it is feeding time, you just add the room temperature water to the bottle, shake, and you’re ready. This allows for faster preparation when you have a hungry baby on your hands.