These two kids are so different.
In theory, they are just 3 weeks apart. But because S was 7 weeks early, they are gestationally 10 weeks apart. It's interesting, but S seems seems so advanced in some areas, and so behind in others.
One is tall and thin (not mine) and one is short and fat (mine).
One can crawl, one cannot (mine).
One is chatty(mine), one is not.
One is a social butterfly (arguably like his parents) and one is a watcher.
As different as they are, I have big hopes that they'll grow up to be close friends. If they can get past the hair pulling, eye poking phase!