Going cold turkey is never easy. If you're having trouble withdrawing, consider what I did over the past few years: 1. Turn off notifications for the Facebook app on your phone; then 2. Turn off notifications for the Facebook Messenger, Instagram, et cetera apps on your phone; next 3. Delete the Facebook app from your phone; then 4. Delete the Facebook Messenger, Instagram, et cetera apps from your phone; and finally…
You would be amazed how much taking colour out of the equation lowers the addictiveness of the content. I guess the people that make poker/slot machines knew about this decades ago, but I think this one step helped me more than anything else.