Help with Implementing Supabase RLS Policy for Specific Field Update

I'm encountering a challenge in setting up a Row Level Security (RLS) policy on my Supabase database. My goal is to allow all users (authenticated or not) to update only the access_count field in my ads table, while ensuring that no other fields can be modified.

My objective is to find a way to restrict updates strictly to the access_count field for all users.