if put myself in your shoes...I will not consider even a second thought to send POF (fd/saving a/c details as per cic norm), I do remember that u have also renewed your PP and that isn't updated either, so send it along with POF, a covering letter and a copy of e-mail replied by CHC NDVO.... I can understand your feeling about delaying the process(which is a guess) but updating these details will not delay the process IMHO (POF and Passport Verification will be the part of normal BC and SC as I think they haven't started your checks) If they will request additional docs later on,that will be verified after submission of docs....it can delay the process.
I have shared my experience and feeling...Now u have to choose what u want to do..!! best of luck
Dua'o Mei yaad rakha..I wish u all best of luck for smooth and quick processing!!
Rabb Rakha (ਰੱਬ ਰਾਖਾ)
babbu