The question

Hi everyone, I’m helping a friend with her F-1/OPT situation and would really appreciate experienced immigration attorney input. Facts: • She is currently on post-completion OPT (F-1). • Her EAD/OPT authorization ends on July 9, 2026. • remaining (SEVIS record shows July 9 as the hard final date). • She is about to receive admission to a new academic program that starts in August 2027 (roughly 13-month gap). • She wants to maintain lawful status in the U.S. until she can start the new program. Question: Would it be advisable to file Form I-539 to change status from F-1/OPT to B-2 visitor status before July 9, or is it better for her to depart the U.S. by July 9 and wait abroad, then apply for a new F-1 visa when the new I-20 is issued for the August 2027 program?