Sibling base petitions take 14 to 15 years.

You should receive correspondence within 120 days and if it has been passed that Contact USCIS for guidance.

Best to work with an attorney for guidance.

Yes, you’ll receive one receive notice with both applicants.

Yes, you will likely have a second interview.

It is best to have a consultation with a lawyer to discuss your options.

USCIS does not always acknowledge withdrawal. You should contact them for confirmation.

This will not happen if you obtain US citizenship.

Yes your boyfriend should inquire with the consulate.

Yes you may do so with the local state probate court.