Dear @Karan
We understand your concern about the Mi Pad 6 developing a display spot shortly after the 1-year warranty expired, despite careful use. Since Xiaomi service has advised paid repair, we recommend escalating the issue by contacting Xiaomi India customer support via their official portal (https://www.mi.com/in/support/) and requesting a goodwill repair or partial cost waiver.
Further, you can lodge a consumer complaint with the National Consumer Helpline (NCH)
If still need help, reply to us.