Feeding enough?

I have a soon to be 12 year old kitten that has been on a prepared raw diet now for about a month and a half. So far everything has been great on it. She started out on the Primal brand for the starter week, but had to go to the Nature's Variety brand food (store's supply of Primal was freezer burned). She is now on a better quality raw prepared brand (can't remember the name). For the past week or so that she has been on this other brand, she has been crazy! It's as if she can't get enough food, she waits where we feed her when it's anywhere near mealtime and meows for food, wakes me up early in the morning and jumps on me over and over until I get up. She didn't do this on the Nature's Variety, but she didn't seem to love it as much as the Primal or this brand. So, am I feeding her enough? She's getting 2 oz. a day and she's about 6-7 lbs. Which is normal for her breed (Devon Rex). I'm thinking maybe I should be giving her 3-4 oz. it's definitely made her coat even softer, she's not throwing up her food anymore like she used to and I love the no smell poop!

Thank you for your help!