When I practice Spanish, I turn the sound off and watch the first half of the show with Spanish subtitles. Then, I turn the subtitles off and I start again from the beginning. The second time, I know the story (enough) to understand most of the spoken Spanish. If I don't understand, then I back up a minute or so and listen again. If I still don't understand, then I turn the subtitles on. Usually, I can watch the second half of the show without subtitles.