Sorry!
The AG has to be confirmed by the Senate. But the President can do a 'Recess Appointment' and bypass confirmation, although the Senate must still confirm the candidate by the end of the next session of Congress. So, in essence a Recess Appointment would serve for up to 18 months. If they are not confirmed within that time, their appointment expires.
The Senate can block a Recess Appointment by not formally adjourning or by scheduling 'mini-sessions'. They did this in August to block Scrotus from making such appointments. They scheduled 'pro forma' sessions to take place every 3 days during August recess.