Can I extend my ED Visa in Thailand until October 2021 for flying school without leaving the country?

Hello everyone,

I am a master’s degree student here in Bangkok with an ED Visa valid from July 2019-July 2021 which I acquired from my country’s Thai Embassy.

And now, I am planning to study for flying school this coming June-October 2021 (4 months to get Private Pilot License). I only need to stay in Thailand until October as this will be the month that I will graduate for both master’s degree and flying school.

I just want to ask, will I get to extend my ED VISA from July to October 2021 with the help of my flying school’s help (eg. extension documents) without leaving Thailand?