How do I study smart, not hard, for the IIT JEE in one year?
You need to do both. You have to give at least 5-6 hours per day and need to give full attention to that time. Also with studying you need proper strategy then you will be able to crack IIT JEE in one year. You can join any coaching, this will help you as face any problem can talk with the teachers of your coaching. And they provide study materials that will also help you during your preparation. You can take mentorship by iit JEE toppers or connect with IIT JEE mentors, they can appropriately guide you. Their suggestions will help you. You can also take suggestions from this link: https://qr.ae/pvOjFc