DS has finished year 11 and is currently doing about 11 hours a week as a tutor both self employed and employed. He also has to spend about 3 hours preparing lessons. He wishes to continue the same hours into y12 but I am worried that he will be doing so at the detriment to his A level grades. He is going to study 4 a levels (one is further maths though) and an EPQ as well as doing other extracurricular like Piano. He is aiming for high grades so I am wondering to tell him whether he should do less work when school starts so he can focus more in study and still have time for relaxation. Also how many hours of work would you find acceptable as his school does not give guidelines.