From what I’ve read the upgrade team only contact you 48 hours before you fly. So I hope that happens for you!
There other numbers they say to use too that I’ve read. 0300 123 1973 and 01633285419, don’t know if they are any better?
It’s awful and ridiculous what they are doing. Sent mine for renewal the same same as my sons first passport. Ive had mine since 5th April, but they have asked for my marriage certificate for his then nothing for 3 weeks! I fly on 21st May. Mine went to Bootle, his went to Peterborough. Keep us posted and I really truly hope they sort it for you