Co-sleeping or not is independent of this unless the child doesn't like to be held then i believe co-sleeping does help here. cuddling together, maybe reading

Co-sleeping or not is independent of this unless the child doesn't like to be held then i believe co-sleeping does help here. cuddling together, maybe reading a story provides an alternative to directly sleeping or playing, allowing the child to settle down until it falls asleep... from my observation, a child not wanting to go to sleep is coming from the child needing to sleep alone.