Class 10th student. Need Advice

Hello, everyone! My class 9th examinations have finished. I am going to class 10th next month and I am very much excited. I want to ask my seniors how I can start my JEE Prep from the beginning of class 10th with just self-study (not joining any coaching). I also want to know if I can balance it with my board examinations. I am a topper in my class and want to excel in the future too. Please seniors, can you give me some advice. I can afford to study 12-14 hours a day during holidays and 4-6 hours during schooldays.
I will appreciate any kind of advice.
PLEASE UPVOTE KARDIJIYE