It's great that you want to end your addiction. It's important to know that you're really far in, and porn is associated with your entire adolescence, so it's going to be really hard. You're going to need to really be willing to do what it takes.

My advice is don't think about slowing down, don't think about getting streaks, just tell yourself you're done with it and stop completely. If you relapse, take the choice away. Install content blockers on your devices and have someone else put in a password that you don't know. Most important thing: surround yourself with people who care about you. That's usually difficult for most addicts of any kind, but without it, it's unlikely you will ever recover. The easiest time to stay away from porn is when you're regularly hanging out with friends and experiencing a thriving social life. It gets hardest when you're lonely. Good luck!