As far as I know...they say to schedule it for the 91st day. You could try do it for earlier if it is not too far a drive. I think you just check online and see what days they are available. Schedule it early so you get the 91st day. Good luck.
Someone posted on another thread that they received their interview date before getting the EAD. That is disheartening.
Someone posted on another thread that they received their interview date before getting the EAD. That is disheartening.