What should I do to get approval of 7 courses?

Hi everyone. I'm in the Faculty of Mathematics -- and I'm aiming to take 7 courses at some point (it's something like 6 math and 1 elective) from 3A onwards. However, I asked the advisor and they say I need to fill a form in the website, from which I need to write some "essay" or appeal on why I want to take 7 courses?

What does one usually write here?