Hi there,
My girl had a litter last week

mine and her's first litter.
Maisie has always been a picky eater even in the last 2 weeks of pregancy, I gave her sardines in tom sauce picked in with her puppy food and chicken mixed in with a little gravy. She did only pick, but she did eat eventually, I too was worried about her not eating enough. I kept giving her tit bits all the time!!
Try hand feeding her, it worked with maisie
Now she has pups she's eaten everything she can!!!!!!!
good luck, its fantasic having a litter but very very very hard work!!! but so worth it xxxxxx
just to add to that!!!!! ice cream is fab!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!