Hello,  as you join coaching,  they will provide you notes on syllabus topics only. So I thought it is sufficient to study coaching notes. And along with this,  you are solving previous year question paper,  it is good thing. But try to solve many question papers as you can,  and try to solve by setting time,  so that you can prepare yourself for time management. Because this is most important to clear this entrance exam.

I hope it will help you.

thanks.

Depends on your coaching notes. Some notes from kota or Allen or ccpt etc are pretty famous for cover a lot of types of mcqs. So I'll suggest you keep some official famous backup book too so that you don't miss out things and it's great to hear that you refer previous years papers.. They will be lot helpful.

Best wishes. Thank you.