There are books now on Sugar addiction, plans to Sugar Detox, etc. The 21 Day Sugar Detox is one, The I Quit Sugar Plan another ...our library has both of these.

The Diet Doctor website also has a course/expert guide to sugar addiction https://www.dietdoctor.com/expert-guide-sugar-addiction
and many supporting articles and videos. https://www.dietdoctor.com/?s=Sugar+addiction

Would you respond well to negative reinforcement as a way to change habits? Read the book "Sugar Crush" and that will scare away any thoughts of cookies