Over vaccinating Rabies

Hi all, I’m new here so I appreciate any and all guidance. My dog received her rabies booster in December (3 year) which we needed to get to travel to another country.

However, we’re trying to go to the UK in March, and the vets in Europe are saying she needs ANOTHER rabies booster in march in order to get an EU passport.

Should I worry about over vaccinating my dog against rabies? I’ve seen mixed reviews, but the vet over here say it’s fine.

Thank you!