Just wondering if your bitch normally gets 2 cups a food a day & is now expecting pups within a few weeks, would you feed her more?

The last two weeks are when the pups are really growing. I would start by adding a cup/day and than increase as she needs it.

Always. I would begin to increase food now adding performance or puppy food. If she's in whelp, due in a few weeks it's time to start her with xtra for sure.

I'm afraid to over fead her, I'm not sure how many pups. So maybe 3 cups a day until her pups arrive, that'll give her one extra cup a day.