How much baby behaviour do your kids do? My oldest is nearly 4 but has 2 younger siblings so copies a lot of his siblings baby behaviour, particularly because he sees them getting more attention. I have a big issue with sucking, licking and mouthing things and am trying to chill out about it. I just can't stand dribbly hands/finger/toys/arms. I don't know how I'd cope if they were finger/thumb suckers like I was!