theres no set way to steep
juice, some people have more complex methods, some people dont. theres also no set time for steeping, some juice is good right away, some might take a couple days, some a week, two weeks, etc.
all i do, is leave the juice in a cool, dark place, like a dresser drawer. i vigorously shake the bottles once every day or every other day. when i get juice, if i dont like it or the flavors are weak at first, i let it steep for 2 weeks then come back too it, maybe give it a try a couple times in between.