I agree and I think the main advice I have is not to double down and get it finished with whoever says yes. Not trying to be mean, just trying to save you from making a bad decision.
The work is likely too far completed for anyone who is a great realism artist to want to get involved, but I would suggest reaching out to a lot of artists with your pics of current work and what you want done. If a talented artist has a vision to rework it you’ll likely face a long wait as good artists have wait lists, but it will be worth it.
Step one would be to research great colour realism artists in the country and only reach out to these people (I wouldn’t care if I was you if this was Qld/NSW/Melb as it would likely be a long wait to get in anywhere you should be going).
Colour realism isn’t my style, but here’s an example from a quick search of the type of artist I would reach out to https://instagram.com/micksquires?igshid=NTc4MTIwNjQ2YQ==