I have to agree...Mine are sooo sweet also. When ever they hear the door open,here they come. Of course they are wanting a treat,but hey,I like to pretend they are happy to see me as well.
Mine will follow me EVERY WHERE. They usually don't go just real far from the house,so at least twice a day,I'll go out and walk all around,with all 11 of them following me. I'll walk slow and stop every once in awhile for them to munch some. Gives them some much needed exercise.
Honestly,I have never weighed my food out for them. Do you know those big Red Folgers Coffee cans...the plastic ones? I fill it about 3/4 full of grower pellets,AM and PM. Now don't get me wrong,I still toss out bread scraps,fruits,crackers and things to them...but just not much at a time. I want them to walk around and hunt for their food as much as possible. I know it won't seem like you are feeding them much,but mine are still growing. My biggest hen would probably go at least 10/11 pounds right now.
I just have out 4 circle cake pans,and that's what I put their feed in.
Here's 2 links for you. These are over in the Meat forum. This first link is pictures of this guys BIG Cornishx rooster. Just thought you might wanna see how big his got.
https://www.backyardchickens.com/forum/viewtopic.php?id=123862
The next is just people talking about their CornishX. If you read through,you'll see where a couple people have luck with theirs. There's several threads on here people discussing their Cornish X. I just like reading through them...gives me hope that mine will live long happy lives!!
https://www.backyardchickens.com/forum/viewtopic.php?id=216685