Yes, because i scare the baby move so much will knock the fragile head or put the hands outside the cot.. So i afraid accidents might happen..
When i bring my daughter back from hospital, after a week later.. when we put her to sleep, she can wriggle herself and you will find her head facing the opposite directions after the next fed. Scare the hell out of me!... but luckily i put the bumper and i also did check on her head, legs and face to see if she gt any bruises..