Masterbation once a week without porn healthy?

I have come across information indicating that masturbation once a week without the use of pornography is considered healthy. Is this accurate, or should I stop entirely?

(Thx for all the help)

Update

It's been about 15 days since I last watched porn, and I've noticed I'm getting more done lately. A few days ago, I did masturbate, but it didn’t lead me back to watching porn, even though I felt a bit of an urge. Recently, I've had a couple of really productive days, studying for over three hours each day.