Having a rough time of it on day 8

Many of us experience what you describe. Escalating to harder content and developing fetishes that weren't there before.
You should go hardmode (no p, m, o or any combination) for a while (the longer the better) and then if you really can't resist it masturbate the natural way: Thinking of a girl you like, her smile, her smell, the way she moves, kissing her, how soft her skin is etc. or experience it in real life! Rewire your brain to normal, natural sex (not that fetishes aren't normal, but well... if they don't come from you but from porn... that's not natural).
You haven't mentioned any sexual problems so I assume you don't have any. Make sure to keep it that way and stay off of porn for good. Like any other drug: As soon as it changes you there's no going back to "normal" use.

To keep your mind off porn: pursue hobbies, meet friends, exercise, read, just keep buisy! If you spend a lot of time in your room for whatever reason try rearranging the furniture. A different (looking) room may be less triggering than the same you masturbated to porn for years...

You can do it! We're here for you.