My DD (21mo) seems to be a tiny bit behind her peers in terms of speech. She says a few things like mummy, daddy, ball, up, down, cat, car, tedding, baby, out, door,shoes, etc etc. Plus she make sounds of things (ie I love you is I uf oo).
I'm not massively bothered that she's "behind", but she is getting very frustrated very easily and I think it's due to not being able to express herself when she wants to. So I'd like to help her more.
I repeat things she's holding, or that we pass to her or things she points at, and I ask her to ask nicely for things instead of grunting/whining and pointing, or dragging me over to things she wants to do, but I'm really keen to give her a little more useful support as she seems on the cusp but not quite there.