Anyone that speaks Japanese willing to help me?

Hello everyone,

I will soon be in Tokyo with my mother for the trip of her life. Unfortunately, she has health problems and cannot eat sushi that has not been frozen beforehand to ensure it is safe from anisakis.

Unfortunately, this practice is still not widely used in Japan, and I can't risk her eating sushi that is dangerous for her.

I tried writing a message in Japanese and sending emails to some restaurants, but no one replied. Some don't even have an email address, while many only have a phone number and don't speak English.

I would like to ask if any of you who speak Japanese could call 5-10 restaurants to confirm this. Of course, I would then ask for confirmation in person by showing them the written message, but this way I would already know where to take her to eat as a gift for my mother.

I am willing to pay for this service, as I don't know anyone and wouldn't know how to do it myself.

Thank you