Liz - don't worry about it they are all different. Even at 3 and 5 (which my older two are) there are differences between them and others their age but when they get older it will all even out.
Lth - lol
I love playing with Ethan and so does dd, she sits and talks to him and makes him laugh all the time hehe, ds1 is the same as he'll make funny faces and dance in front of him to make him laugh. They're both so good and gentle with Ethan, give him hugs and kisses all the time too
I'm amazed how quickly Ethan's eating has come along, it's only been a couple of weeks since he started and he's really good at picking food up to eat it. He has some of my chow mein for dinner on sunday, I did plan a roast but couldn't be bothered so we got a chinese instead. He loved it and was stuffing it all in his mouth hehe. He eats pretty much the same as what we do now which is fab and so much easier than with the other 2, we all get to eat at the same time now
DH - glad ruth saw the dr and you know what's up with her, hope she's feeling better soon
Wilkie - check the salt, they have lots in, really too much for babies.