Yes, you can start preparing for CA foundation in class 11. Here are some tips to help you get started:

1. Understand the syllabus: The CA foundation syllabus covers four subjects - Accounting, Mercantile Law, Economics, and Quantitative Aptitude. You should familiarize yourself with the syllabus and understand the topics that will be covered in each subject.

2. Create a study plan: Once you know what topics you need to cover, create a study plan that works for you. Set aside time each day to study and make sure you cover all the topics before the exam.

3. Get the right study material: Invest in good study material like textbooks, study guides, and practice papers. You can also find online resources like video lectures and online practice tests.

4. Practice regularly: Practice is key to success in CA foundation. Solve as many practice papers and mock tests as you can to get a feel for the exam format and to identify areas where you need to improve.

5. Seek help when needed: If you are struggling with a particular topic or subject, don't hesitate to seek help. You can ask your teachers, friends, or join online forums to get help and guidance.

Subject wise strategy to score better in CA CPT:

1. Accounting: Practice is key to success in accounting. Solve as many practice papers as you can, and make sure you understand the concepts and principles behind each question.

2. Mercantile Law: Understand the legal concepts and principles, and practice applying them to case studies and scenarios.

3. Economics: Focus on understanding the basic economic concepts and theories, and practice applying them to real-world scenarios.

4. Quantitative Aptitude: Practice solving mathematical problems and equations, and focus on understanding the underlying concepts and principles.

Remember, consistency and practice are key to success in CA CPT. Stick to your study plan, practice regularly, and seek help when needed. Good luck!

Yes, just concentrate on your 11th Accounts and Maths, and side by side watch CA Law subject video on YouTube. it will help you a lot after when you actually start CA studies.