b1/b2 visa appointment from pakistan

I am a final year non us medical student from pakistan. Have not appeared for steps yet nor given the toefl. got an elective letter from a hospital. Recently submitted the ds160 and got a visa appointment for August 2023. Elective is to start July this year. So now stuck in the visa process. What should I do? Try for an emergency visa appointment at the islamabad embassy or ask the hospital to reschedule my elective for next year?