This is esentially a teen pregnancy. Since your dog is in the teen stage of development, it will be a very high risk pregnancy. Dogs should only eat twice a day anyway. Although I have not researched yet essentially what times the pregnant bitch should eat, I'm sure you have because yours is! Is this Angel who is pregnant? Tell me, what will you get out of this litter except a bunch of pet puppies? Was the pregnancy accidental? I think you should see your vet anyway.