My baby is 4 months old.
She gained 100g/3.5oz in 2 weeks.
During the transition days, I kinda gave her more food until she quits eating because she was picky (probably didn't like her old kibble, that I had to mix chicken liver in) and I was afraid she'd be hypoglycemic. Then I noticed she became a little fat, so after the transition, I lessened the amount of kibble I gave to her but it was according to the amount suggested for her weight, just in 4 little servings. She appreciated the food more (even without chicken liver) because it is not overflowing and now she can't wait to have her next meal
Btw, I checked the Estimated Growth Chart and she's still on the right track so I guess the weight she gained wasn't really too much.