When will be a good time to let toddler sleep on a pillow? My lo is coming 20 months and has not slept on a pillow since birth.

I agree with Chin Yin, there is no hard ans fast rule about it. In fact babies, toodlers and even kids do not need a pillow. I personally feel that a pillow is more of a comfort item. Nonetheless to each its own. More of a preference i would say. Cheers