JEE Main in the usual time (when there is no COVID) is conducted in the month of January for first slot and then in April for second slot. Since the country is fast moving towards normalcy from COVID-19 pandemic, thus be prepared to give the JEE Main examination for the first time in January or February and the notification might release anytime soon.

You will be able to fill the form in November or October, depending on the situation. All the best!