How much to feed her?

I have a GSD/Husky mix (50/50) and 9 weeks old, but she only weighs about 4lbs. She has a hard time eating her kibble just because she’s so small. She has all of her baby teeth of course, but I didn’t know she was going to be as small as she is. I started feeding her 1/4 cup of wet food and 1/4 of dry food mixed together twice a day, but I don’t know if this is enough or too much or what just because I’ve never had such a small puppy and everything goes off of projected adult weight which I just don’t know. Her dry food is purina one instinct puppy and her wet food is purina one lamb and rice. I was gonna post a pic in the comments but it won’t let me 😂