He isn't struggling with the level of the work, but is finding the increased volume of work (compared to the first year) difficult.
Due to his health issues, he doesn't have to attend all lectures (he has access to the PowerPoint and audio recording) but he is supposed to attend the tutorials and seminars.
He gets a bit behind, then decides that his time would be spent more efficiently studying at home rather than attending a particular lecture. Then misses something important they mentioned after the recorded part of the lecture finishes (e.g. start reading these books or extracts now).
Time management has always been challenging for him. He is improving slowly.