Nursing to sleep

Julia • Kiwi girl, Kindergarten Teacher and Aunty to one beautiful nephew. Expecting our first little one January 2015
So my bubby (8weeks) is only wanting to nurse to sleep- ie out bedtime routine is bath feed till drowsy, cuddle then bed. Nap times she wants to auckland till drowsy then u put her down.. So se is generally partially awake when she goes down
Anyways, I've been told I need to stop nursing her before sleep .. 
Is this going to bite me in the but later? Or should I just continue doing what I'm doing?