With DD1, she really wasn't bfing at night for quite a while and then went back to it around 16 mths. I ended it by offering water and snuggling. DD1 is an easy going child and after a few nights of fuss, she stopped.

DD2 is not so easy going and consistently fed during the night until about 17 mths. She suddenly started eating more food and I cut down her bfs to three a day and none overnight. Pg may have helped. Ironically, where it used to take me ages to settle her if she woke with a bf, now I just need to lie her back down after a quick cuddle. She still has occasional wakeful (awful) nights, but they're a lot less frequent now.