Hello,
If you are preparing for JEE 2027 and currently have little concept clarity, start by focusing on the basics. Understand the fundamental concepts in Physics, Chemistry, and Maths using your school textbooks. After learning a concept, practice simple problems to apply what you have learned. Gradually move to more difficult problems as your understanding improves. Keep revisiting topics that are difficult and clarify doubts whenever necessary. Follow a consistent study schedule and revise regularly. With steady practice and focus on fundamentals, your concept clarity and confidence will improve over time.
Hope this helps you.