My Elias will be 4 mos on March 10th. He has been sitting with support and exclusively bf. I'm not in a hurry to start solids but my other children never sat so early. I started my last child at 9 mos because that's the age that he seemed to sit up and interested in food. He's a picky guy and i don't want that to happen with my Elias. My first two kids were formula fed so who cares..lol..anyway, is sitting up a sign of readiness? Is waiting as i did with my last child a bad idea?