This program should be taught, in the beginning, with one or two 15-minute periods each day. Perhaps, your youngster may only have a concentration span totalling five minutes. Stop when she wants to stop. Don't prompt guilt feelings if she loses interest.
Guilt can really happen.
Hold back that urge, my friend. A child does not have a hole in the top of the head into which we can pour all the knowledge of the ages. Patience will pay off. You know your own child, and when she is finished with a thing, she is finished, and that's all there is to it. Take your time.