And more to the point, are they not progressing or are they getting injuries? If they are showing signs of over training, then you need to step in. I don’t know exactly what is happening so it is hard for me to advise more. But I adjust my clients programs with the guidance of their recovery markers. I ask questions like, “how are you sleeping?”, “how is your energy during the day?”, etc. And I keep a close eye on their stats, heart rate, repiratory rate, performance factors, etc.