If you don’t need your passport for travel within the next 2 weeks then I don’t think you will be able to upgrade. I believe its only available if you are traveling abroad within 2 weeks or if you have been waiting 10 weeks from when the documents were marked as received. I think you can only get an urgent upgrade for compassionate reasons. The advisors are useless but when I phoned them the 2nd time they did put me in for a call back which i got 24 hours later and they were much more helpful. Might be worth requesting a call back as they would be able to give you a better answer.