My baby is co sleep with me, When should I separate the room with her?

I personally think it depends on individual preference. Generally, parents will want their children to sleep in separate room when they are either too big enough to share the bed with parents or when it time to start learning to be independent. There are parents who never co sleep with their babies right from the start. I personally think I will want to start training my baby to sleep in his own room when he is 2 years old. I think it will be easier to make the transition when he is big enough for me to reason with him.