Looks like you have some catching up to do to get ready for the new arrivals. Things such as whelping box, whelping supplies, bedding possibly finding a breeder near you that you can call if you need assistance. Two pups should be an easy whelp but there is always the chance with any birth that something can go wrong. Have you vet and emergency vets numbers on speed dial.
You can also search other thread here on YT for some great information to prepare you for what to expect. Most importantly start your gal on puppy food right now to increase her mild production. I feed my gals a mix of dry puppy food and can puppy food three times a day un til whelping and than four times a day after. Use the same brand of food she is on now.
Meanwhile here is a great site that can be very helpful in the care of mamma and pups. Debbie Jenson
Dog Breeding and Canine Reproduction by Debbie Jensen. Dog Breeding and Whelping guide for dog breeders.
Good Luck to you and mamma for a safe whelping !!