Chapter practice works best when it follows evidence from your attempts. Begin with a representative mock or sectional test, identify the weakest subject, then narrow it to one or two chapters. Practise those chapters in short focused sets, review mistakes immediately, and repeat until accuracy becomes stable. After that, move back to a sectional or full mock so you can check whether the improvement survives under time pressure. Avoid trying to repair five weak chapters at once; a small repeatable loop is easier to measure and maintain.
Use the result to choose your next practice
Open your TMock dashboard after a submitted attempt, check subject and chapter accuracy, then choose a focused test before your next full mock.