Now you are using a kitten nursing bottle right?? If she is 3 wks old she should be suck 3/4 of the bottle per 6 hour feeding.. I have nursed bottle babies at a whole bottle per 6 hour feeding if 3 wks old.. Now if she is 2 wks old then about 1/2 bottle per 6 hour feeding.. I have at 4 weeks had nursing babies to start on wet mush.. KMR milk to soak kitten dry to a wet mush.. Make sure its Kitten Milk to feed && Please dont forget to Burp the Baby after each feeding.. Last of all Remember to stimulate the bottom for pee pee & poo poo with a warm wet cloth.. Oh Lots of Whisker Kissess & Cuddles & getting up in the middle of the night & early mornings feedings.. I think that should do it.. Good Luck.. She is a Cutie Pie for sure.. Oh I know your going to be a Great Mom..