Basically something with a lot minimal pairs drills, recordings, mouth/tongue placement, IPA, and so on. Could be a paid or free resource.
Equivalent of books such as Phonetik Aktuell or Christopher Hall's Modern German Pronunciation for the German language. Perhaps Der kleine Hey. Or FSI's Introduction to French Phonology for the French language. Or Ann Baker's Ship or Sheep? for the English language. That sort of thing.
I get that the best way is probably taking a (phonetic) course in person and/or living in Portugal. But I don't live there and I'm looking for something for self-study. I don't think anyone teaches the language in person around me. No Instituto Camões either.
Possibly will record myself and ask for feedback on reddit or discord.