I can't seem to find an answer for this so I'll just ask!

What is the normal weight gain per week for a Yorkie that is 5 to 6 months old? 1 oz? 2 oz? 3?
On her 5 mo. birthday (9/25) she weighed 4.5 lbs and tonight she weighs 4.9 lbs. Is this an ok gain? We use our home scale to weigh her so it's not entirely accurate, but I think it's close enough.
I just want to make sure Sophie is gaining properly and not too much or too little. She's on the Orijen Six Fish Formula All Stages food which I know is high protein, so I just want to make sure she's not eating too much or too little. She gets usually 1/2 cup per day (1/4 c in morn. 1/4 c. at night) plus treats (cheerios). Should I increase or lower her kibble amount? From the puppy growth chart (sometimes accurate and sometimes not, I know) she should be on the way to probably 6 to 6.5 lbs, I think. Am I looking at this right?