1st Rabies shot is valid for 3 years, second shot is valid for 1 year, given before 1st shot expired

Hi everyone! Just looking for some information/advice.

I am moving with my dog to Okinawa. I am aware of the requirements regarding rabies, but I recently came across someone who mentioned that Japan may not accept the 3 year rabies vaccination.

My dog had her initial shot in 2022, her second one was today. 1st shot doesn't expire until August 25th.

Is this going to be a problem? Or do I have to start over?

Thank you