[LunarBerry]

Hmm, it depends if you intend to free-feed her or have her on scheduled meals. Scheduled meal do help out in her potty training some as it controls when and how often she goes. Depending on her weight she would be eating frequently but in small amounts. Like 3-4 times a day and it would on average 1/2 cup for the whole day, you would look on the feeding suggestion on the bag for better amount frequency suggestion. The richer/premium foods are usually not given as much. you'll have to consider that she has a tiny tummy, so she's likely to not eat as much at a time or need to eat as much in general as the bigger dogs you're used to.
Also note that yorkies tend to get hypoglycemic at a young age, so have some nutrical on hand or something similar (a little dab will do when giving it and be sure to have her eat something soon afterwards to keep her stable) for when she gets shaky or emergencies. Especially when picking her up for travel as travel can possibly stress her out. Don't give her too much of it as it's basically like giving her candy for a quick pick-me-up. As she gets older, it usually lessens most of the time. This is where free-feeding is helpful. Free-feeding allows her to eat whenever she feels like it and will reduce chances of a hypoglycemic problem. Yorkies are usually pretty good at self control when eating. Of course each individual varies :3