Sounds fine!
You said that your snake was around 13 inches long correct? If so 2 pinkies/ a fuzzy a week sounds perfect to me.
Well you can try feeding it every 4-5 days but that means less handling time for you. Also some people keep track of feeding better with feeding once a week...(that is me..haha) so once a week is fine too
just do as you feel is right for you