Daisy,
I wanted to comment after reading your post, but have no experience with IEW, R&S or FFL. :001_unsure:
One scheduling possibility is to plan a set time for each subject, and move onto the next one if she reaches the minute mark. Personally I like to naturally flow from one lesson to the next without feeling rushed. I also prefer to plan our schedule and add rather than drop a subject.
I'm looking forward to hearing more voices sound in.