The following information is from the excellent resource, 'Caring for your Baby at Night' - UNICEF UK | BABY FRIENDLY INITIATIVE
If you decide to Bed Share
Keep your baby away from the pillows.
Make sure your baby cannot fall out of bed or become trapped between the mattress and wall.
Make sure the bedclothes cannot cover your baby’s face or head.
Don’t leave your baby alone in the bed, as even very young babies can wriggle into a dangerous position.
Some parents choose to sleep with their baby in bed and some fall asleep with their baby during the night while feeding and comforting whether they intend to or not. Therefore it is very important to consider the following points.