RSS stumped!

Running latest version of wordpress. Single site.
1.On a page or post you select the jetpack sharing buttons are displayed.
I would like to create a RSS button to appear with them that when clicked will return the feed for same page or post
or
2.A plugin that will create automatically a RSS link on each page that relates to the page it is on
or
3. A plugin that creates a category RSS feed button automatically on the page and relates to the category that the page or post falls under

I have spent several hours trying to find something suitable i must be using the wrong search criteria