Well I have courage and this is my email. We had a problem sow and she did this with 2 litters, it's not unusually for a sow to do this when she's new to motherhood. Now for baby problem.
Goats milk is a good substitute and near to sow milk.
A bag will last forever with pots since you dont have a huge litter or herd. This is what the vet could find to tell us, and copied articles from vet journals. Maintain an 80-85 degree environment with a low watt light, provide shade for the piglet so they don't sunburn. Overfeeding will resulting in diarrehia. Piglets can begin pan feeding at 1 week, believe me they'll figure it out, and at three weeks the vet suggests beginning creep.