Just wanted to say good luck with the litter. I know that this is not a typical breeding situation but what's done is done. You have very little time to prepare for the birth of these babies. I have posted a link below that has tons of useful information.
In doing your research, you may want to find a reputable breeder in your area that could maybe help assist you in the birth. Someone who has experience with small breeds would be great, but anyone who is knowledgable with the signs of distress during labor would be of assistance as well.
Again good luck and I hope all goes well for you and your treasure.
YL
Dog Breeding and Canine Reproduction by Debbie Jensen. Dog Breeding and Whelping guide for dog breeders.