When can we start putting a pillow behind our LOs heads when they sleep? Are there any pillows that can help prevent flat head?

I don’t think it’s safe to let baby sleep on a pillow when they are small. Risk of suffocation. But during the day when there’s people around supervising, then i think it’s ok. You can try this donut pillow. There’s a dent in the pillow for baby’s head, so can help prevent flat head. It’s latex and with all the small small holes in the pillow, it promotes air circulation also. So babies won’t sweat while lying on it. https://welovesupermom.com/products/bd0018-sofzsleep-donut-pillow-pillow-cover-worth-1890-when-you-preorder