When can I begin using the cradle for my baby? Emily M. 01 September 2022 20:12 The cradle can be used by a newborn baby until he or she can sit unaided (approx. 6 months) or weighs 18 lbs/8 kg. Related articles How do I assemble/disassemble the baby cot? Why should I choose BABYBJÖRN Cradle instead of a traditional cradle? Comments 0 comments Article is closed for comments.