(he just made 5th kyu)
If this is true, he probably should be focusing on his training and form, more so than defeating his upper classmate's techniques.
His Aikido really can't progress until he refocuses himself on himself.
But look at the bright side; you are working to make yourself effective, and he is training to make YOU effective...you are doing all the training when you work with him. So really when you work with him you are the only one training if you think about it.
All the training for you, none for him. You'll progress and get better. If he doesn't refocus he'll stagnate.