Hey, I have just begun my preparation and relying entirely on self study. My optional is psychology. It would be mutually beneficial for all of us if we have a small dedicated group working towards the same goal. Healthy competition keeps you on your toes which boosts efficiency and knowing that someone else is going through the exact rigor as you are gives you moral support. Please comment if interested. We can form a whats app/telegram group of 4-5 sincerely hardworking aspirants.