ANSWER:

This is not authentic. 

I heard from someone who was saying that our beloved prophet Sallallahu Alayhi Wasallam liked sweet much.One day a woman came with her child asking the prophet Sallallahu alayhi wasallam to make Her child leave the habit of eating much sweet. The prophet sallallahu alayhi wasallam didnot do that because he himself was taking much sweet? Any sahih hadith regarding this?