@meimei0602 , understand your reason for wanting to file as a resident for tax purposes. While I have said earlier about making first year choice is true, on re-reading the regulations about "exempt status" the word is "is exempt" and to me that means that the exempt person does not have a choice -- the choice to declare the status lies with the taxing authority. Also the first year choice is limited to persons whom are NRA at the moment and counting days -- there is no mention of "exempt". All of these lead me to opine that you would not be successful in asserting that you want to be treated as a resident for tax purposes ( under your current status).
I am sorry to have to take this stand.
Good Luck
