The government Healthline recommends babies not have a pillow until at least 1 /12 years old and the red nose site says 2 years old. Is there an age were you know they are completely (98%) in the clear and safe to use a pillow?
Red Nose Education
Red Nose recommends that you withhold pillows (& other soft bedding) until a child is in a bed, &/or 2 years of age.
Red Nose has the following information
Soft bedding may cover the baby’s face and obstruct breathing and/or cause overheating.
Older babies in a cot can be at an increased risk of a sleeping accident by using pillows and bumpers as a step to climb up and fall out of the cot.
It is safer to wait until the child starts to sleep in a bed before introducing a pillow or other soft bedding.
Pillows are not necessary for baby and increase baby’s risk of sudden unexpected death in infancy including SIDS and fatal sleep accidents
Red Nose recommends delaying offering a pillow until baby is over two years of age and is no longer sleeping in a cot or portable cot