On one hand, I think stopping cold turkey and with the goal in mind to never do it again is the best. However, I can see that having a goal for only a week could be okay, as long at it's a way to prove to yourself that you are really capable of not looking at porn for a whole week (which you are completely capable of!). Speaking from experience, I've had a one year and half streak, a six month streak, and now I can easily do 3 months no problem, although I'm sick of that as well. But needless to say those relapses have shown me that life is great and beautiful without porn (in fact, 100x better), and that I'm completely able to live without it. That is great knowledge to have and to know.
Thus, If a week truly does sound impossible to you, then by all means, go for it! But go for it all with all your heart, and don't half ass it. There are literally no excuses to not be able to go even one week without porn. Trust me on this, this shit is not nearly as hard as we make it out to be. One week without porn is nothing in the grand scheme of the universe. Plan out a schedule for this wonderful event, "I will not look at porn till the 14th of January, blah blah blah". And then do what you must to succeed, no excuses. Give your computer and phone to a trusted friend or family member, work 24/7, read 24/7, sleep 24/7. Hell, tie yourself to a mast with a blindfold on and a chastity belt wrapped around your dick for good measure! But whatever you do, do not look at porn.
Then, when the week is over, and the sirens have lost the beckoning power, you will realize that you are (and were) completely capable of not looking at porn. And then you will have the confidence to go forward. I would say good luck, but you really won't need it. All of this is really up to you, not me, or anyone here for that matter.