Last minute Substitue Piano Teacher

B3's piano exam is next month. However, he has missed a few lessons as teacher was not available. Though it's just beginner grade, it shouldn't be that difficult to pass but I'm still worried. Furthermore B3 is planning to quit piano after the exam, I hope he can get a merit or distinction for this exam. At least have an honorable conclusion. Managed to get Mag to stand in and give extra lessons. Hopefully, it will help B3.