This stage, the Separation Anxiety, is very normal in the psycho-emotional matureness of the babies.
When your baby was 8 months of age, he could feel that everything around him (including his parents) was part of his body and everything happening around him, was thanks to him (this is the narcissist or egocentric stage of the just born babies)
Slowly, he starts to understand that he is a person and you are another.
Before understanding this, he did not care if he could see you all the time, because as you were part of his body, it was as if you were always with him.
When he understands that you are a different person from himself, it appears a new situation for him, which will affect his personality for a long period of time: if he cannot see you, he will think that you are gone and that you will not come back again any more.
Do you want to help your baby to solve this problem? Please read the instructions.