First of all I hope everyone is keeping safe and sorry in advance for the long blurb...
I finalized and paid for my application for British citizenship last night (I am EEA citizen and have settled status) and although I had triple checked everything before paying, I realized as I read the printed out form that I made one horrible typo on the return date of one of my trips outside of the UK in 2017. The trip was in India between April 7th, 2017 and April 20th, 2017 but I stupidly wrote April 20th, 2019 as a return date!!! So instead of an 11 days trip it makes it a 741 days trip which would automatically disqualify me for the citizenship

As I realized my mistake this morning, I immediately sent an email to the FurtherNationalityEnquiries@homeoffice.gov.uk email address to notify them of the issue and received an automated answer saying that they would get back to me within 20 working days.
I have my appointment at UKVCAS on March 3rd.
After reading a few posts on this forum, I also called the HO and managed to speak to a person who suggested either to withdraw my application and that I "may" get a refund as it was very recent and I hadn't submitted my documents/biometrics yet or to not do anything and go to my appointment on March 3rd with all my documents plus a cover letter and justifying documents (my flight booking confirmation stating the actual return date on April 20th 2017) to join it to the rest of the documents explaining my typo/mistake.
So... now I am torn as I am not sure what the best solution is to rectify this and would like to know if someone had an experience or advice around this.
many thanks in advance for your help.
Ceclondon