2. When the potatoes just germinate or the teeth don't grow big, you can dig out the buds and bud eyes, and the rest can still be eaten, because the toxins are still concentrated on the buds and the parts near the buds. The toxin has not spread. Generally speaking, if you don't eat enough potatoes to cause food poisoning, there will be no problem.
3. The potato has a little bud and won't eat anything wrong. However, if the surface of the potato is mildewed and blue, or there are several buds on a potato, it should be thrown away without hesitation. Even if the buds are dug up, even if there is no danger of poisoning, there is little nutrition and taste left, and there is no value left to eat.