Do you use pillows for baby 0-3 months? if no, when is the first time you use a pillow and what kind? thank you

My son is used to sleeping with no pillows at all, except during naps when I would put bolster pillow or breastfeeding pillow around him so he could sleep longer while I do stuff. He is five months now. If you opt to buy pillows, buy this kind so you can prevent your baby from having flat head syndrome Photo from aussiebuby.com