It takes hundreds of hours, but for me, it's working, and I'm enjoying it. I'm using Dreaming Spanish [0] which is free for a while, and then pretty cheap if you want to keep going. Strongly recommended.
Ideally, if you work remotely, move to latin america for a few months. Otherwise, find a digital (app-based maybe) or social way of doing the same where you are. Also, suppress all embarrassment about saying anything incorrectly, just get the essential ability to communicate ideas across first while you converse as much as possible. Refinement can come later, the first thing is to learn the broad strokes rapidly.
My two cents from experience learning two additional languages fluently.