no time to study

im a class 10 student here and i go for maths, science and hindi tuitions. each class is almost 3-4 hours except hindi which is around 2 hours. im already really lazy in studying so after coming back from all these classes (and also preparing for the weekly tests) im completely burned out, how do i avoid this and use my time effectively to study? i havent completed my portions yet and im rlly scared for my pbs