Don't study for CA Foundation | CA CPT while giving 12th board exams as it will reduce your concentration from 12th board exam and they are really important for your future. CA Foundation | CA CPT study can be done in 2 months. Start studying 2 days after your 12th exams are over. 2 days you can relax and then be ready to prepare for CA Foundation | CA CPT. After that just concentrate on CA Foundation | CA CPT and you will definitely be able to complete your syllabus in time for the CA Foundation | CA CPT exam. You might already have knowledge about the Accounts and Maths/Economics. So it will be easy for you to prepare for the rest subjects.