Our 2 kittens are coming up on their 10th week. My daughter feeds them Wellness core canned. She gives each kitten a 1/4 can 3x a day. In addition to that, they have Wellness core dry available at all times. Everything I read said until 12 weeks, free feed. After the 12 weeks gently get them on a feeding schedule. Once they hit the 12 week mark we will slowly take away the dry and feed canned only and adjust as needed. I just don't like having canned sitting out and I know they need the extra calories while little.
I was a bit concerned as Sparta was looking a little thin. While seeing the vet on Friday, she said the kittens were perfect. they had gained .4 pounds in a little over a week as well.
I think a lot has to do with energy levels. How much free range running does he have in the house? My daughter is home from school for the summer and her kittens follow her everywhere. They spend more time out of their "safe room" then in. This is why Sparta started looking a little thin, she wasn't losing weight but gaining nice lean muscle from running, jumping and climbing all day.