I certainly did not experience cognitive decline from stopping risperidone. In fact, my cognition improved because risperidone was causing deep depression in me and depression can give one temporary cognitive decline. But everyone is different and reacts to medications in one's own idiosyncratic ways.

Who is your prescriber? who follows you in stopping risperidone? What are you taking now, instead of risperidone? What is your primary diagnosis? Does the prescriber know that you cannot get anything (news, tv series)? these are some obvious questions that pop to mind.