“Again!”
The key word for this age is “Again!” He may want to follow exactly the same routine day in and day out or wear the same clothes every day or eat the same foods. As irritating as this can be to live with, the repetition is providing your little one with a sense of stability and control. He is trying to make sense of his world. Once he figures out how something is supposed to work, he wants to do it over and over to make sure it happens that way every time. When he sees the same result, he is reassured and gains confidence. Rituals provide comfort.