Physical chemistry of class 11 is one of the most important topics for any competitive exams and you have to be thorough with the topics as it ll be helpful in class 12 also. Among the topics included in class 11 more focus should be on Basic mole concept, chemical thermodynamics and redox reactions. Prepare these topics extremely well as they carry more weightage in exams.
physical chemistry is all about practice, so practice as much as you can, all types of questions, be it simple or hard. You learn more from Question solving than theory. Focus on books like Physical Chemistry by Arihant Series and R.C.Mukherjee. They are best books for advance level preparation. Solve past year Jee(both mains and advance) repeatedly.
All has to be done by you only, so practice and practice. Hope it ll give an idea about where to focus more.