If you just listen to each lesson one time, or a few times, one or two days, you will not speak English easily, confidently and automatically like a native speaker. You will be entertained, maybe. You might enjoy. You might learn a couple words, but you’re not going to learn how to speak like a native speaker. To do what you’ve got to really have this deep level of repetition. I know you’re serious about it so you’re going to do it. Good luck.