How old does your baby experience separation anxiety? Any tips to help them cope with the transition to infantcare?

My baby is 6+ months and already experiencing separation anxiety. He cries the moment I leave the room, or if I go out of sight. What I did was to get my parents (especially my mum since she is caring for my son when I'm at work) be more involve with my son when I am with it. Over time, it gets much easier to leave the house.