I started EC son (who's now 16 months) on the day he was born. From 3 or 4 days old, we were catching EVERY morning pee/poop in the toilet, and a lot of the daytime eliminations would go there too.
But once he started crawling (4.5 months), holding him in that position was almost impossible as he would squirm and push to reach anything he can grab on to. In the case of the toilet, it was the toilet lid. If I held him forward facing, he would reach for the toilet paper.
Our morning routine quickly started turning into misses, and now at 16 months, I CAN NOT get him to sit still. Forget the potty because he stands up and RUNS away, and the "lean, reach, grab" thing on the toilet has just become dangerous.
We still practice EC, but he won't sit still for anything. I've tried books, toys, ipod (his favorite), and while he will sit still for a short period of time, he's usually too consumed with whatever he's doing to concentrate on eliminating. He's just "on the go", and he wants to get there fast.
I don't even remember the last time we caught a poop (although I do catch the sign and rush him to the potty, but I'm usually too late, OR by the time I get him sitting he's on the go again). He knows the sign for poop, and he'll occasionally take himself for a "sit", but that's all I can get out of him.
Does anyone have any tips for a child like this?