I've tried making potato puree & potato+carrot puree. Both turns out to be very sticky and i think its quite difficult to eat it. Is it suppose to be that sticky?

Yes dear, please add some bm or fm milk to get the liquid consistency you want. Potato is starch naturally stickier and i wouldnt blended but rather mash the potato, you can also mash carrots. I used to have a baby steam blender, but now i prefer the food processor on the go. Cheaper and easier. Hahaha