You have to check online documents you need for Jamaica embassy, you can book interview , if your noa2 will expire March 23,or 29th, take the interview for March 22 , if it's march 29th you can book for March 27, if you know your case number you can fill ds160, and the interview date , other thing don't worry much for your noa2 ,cause for k1 process it's automatically renewed,just you have to say the consult wy you could not be present in the interview at the right time . And I saw something working for me ,I don't know if it's will work for you, as soon you book your interview ,they will give you instructions in the confirmation page for what do you have to bring in your interview, I didn't receive package 3 cause Dominican republic they don't give package 3 ,. And other things you have to do your medical test two weeks before interview, so I think it's good idea you book your interview the time you waiting package 3 if they send in Jamaica