Fine-tuning or training from scratch in a differente language?

[paulovasconcellos-hotmart]

Hi everyone, I'm considering putting some effort into training StyleTTS in Portuguese. I have a good-quality dataset for this task, however, I was in doubt if it would be better just to fine-tune the model (which I know was trained in English), or (since it's an unseen language) train the model from scratch in Portuguese.

Does anyone have some tips on what I should consider before making a decision?