Hi there,
Hope you are doing well.
I am sorry to say, but if you have filled yourself as a general category student during the filling of application, then there is no way you can get your category changed at the time of counselling.
Hope it would help.
Thank You.

hello aspirant,

there is nothing you can do now, see after submitting application there must be some correction window open. but you were not aware of this, right now exam has done, results are out. so you need to sit in the counselling from general category.

please be careful in future when you are filling  an application.