hey nat,
i have been sitting Hamish up now for around 3 or so months. he has been wanting to sit up and is so close to being able to do it himself. we changed his car sear around too about 4 weeks ago now coz he was trying to sit up with it in the rear facing position!! little worm!! lol. i think its entirely up to the parent really. each baby is so different. go with what u think.

afm, we got Hamish a jumperoo last friday and he loves it!!! its the ocean wonders one by fisher price. he loves being able to stand and bounce and play with toys at the sametime. its so cute!