Adobe Lightroom Specialist to create Meta Data

I shoot Bodybuilding shows and need help speeding up my Workflow. I currently use Adobe Lightroom Classic and could use help adding the metadata to each photo. (Name of competitors). It is easy use facial recognition to get most of the meta data. However, When they turn around and view their backs the only reference I have is the numbered button they have on their Bikini/trunks. They typically have two buttons. one on the front and one on the back. I typically have anywhere from 7,000-12,000 pics per show. Anyone out there good at this? Looking for a 2 day turnaround. Please reply with estimate etc. Of course I would have to share the library. Thanks for you time. Price TBD