My vet will let you buy the medicine and give it yourself maybe if you call and explain your situation they might help you out.If he will you could get lactated ringers and give some sub q to help him stay hydrated. If the vet wont do that I would take him to the vet anyway, maybe you could explain to your husband that the dog might not make it without vet attention and your daughter would be very sad if she lost her puppy? Prayers and best wishes for your puppy