how much food?

I know this another question that lots of opinions on but I have two growing boys. Two orange tabbies. One is 9 months (about 9 pounds I think ) and the other is 4 months (maybe 5 months). I free feed dry (royal canine Kitten) and give each a can of natural Blanace. They seem to finnish it and are ready for more. I feed 1/2 can in morning and 1/2 in evening. Any suggestions? Too much? too little. No one is overweight.

If they're not overweight I'd feed them as much as they want. How does the amount they're eating compare with the feeding guidelines on the packaging? If you think they're eating too much you might want to get them checked out by a vet to make sure there's not a health problem. I find that the amount kittens eat varies according to growth spurts.

I free feed all the dry of Nutro and 2 cans Nutro wet...

I was told by the breeder of my 2 kittens that you couldn't overfeed kittens - they only eat what they need