It's really about doing what you think is best. Perhaps it is a cultural thing... and I myself do not know about the "pro's/con's" of giving Chamomile tea to children... some use it to keep a child calm... that's what I"ve heard and read. And if you notice, "Chamomile" are in teas and some homeopathic products to aide in "calmness" and "sleep."
Though, giving juice is really not required. If your child eats fruits...then that is sufficient. For us, we did not give our children juice (diluted with water), until after 2 years old. And even then, it was just at lunch time, or a meal time. Other than that, we gave them water. We gave them "juice" only about 2 time a day... 2 at most, and only about 4-6 ounces.
Its really up to you. But as my Doctor says... juice isn't really necessary... and be careful of the "habit." try to give "whole" juices, or 100% juices... with no corn syrup in it, or the "no sugar added" types.
Good luck,
Susan