Hi Elizasalaz,
My husband and I are actually in the same situation. In June 10, we received the email requesting medical exams, and certificate police from our country and for my husband the FBI certificate as well. We sent the FBI request the next day and we are also hopping to get the results within the 3 months they gave us but right now seems impossible. Yesterday, I received the answer to my "what if" question, and they told they can only extend the time if I send a request a few days before the due date. So, right now we're filling ourselves with patience and praying for my husband fingerprints to pass through the verification process and they don't reject them. I think I'll request more time 10 days before our due date. So, for now waittttt.... :-X ... and thought they gave you only 30 days I think you would be able to extend it again, don't you think?
Luck for all..