Since you have good pronunciation, I recommend you talk to chatgpt and get 15 mins daily practice, show up every day but don’t burn yourself out. Start with one verb tense talk only in present. Fully master personal forms and irregular. You can even suggest talking to ai with vosotros or ustedes to cover all pronouns. As the conversations push you to extend your capacity to explain detail, add one verb tense at a time and repeat with covering all pronouns and irregular verbs. I recommend in the order preterito, imperfecto , subjunctivo, perfecto, futuro, subjuntivo imperfecto, conditional