Separate anxiaty

Any mummies can help me out here giving me solution how to handle separate anxiatt on a toodler 2 years old . My boy suddenly became so clingy till the extend that even going to school also he hug me so tight dont want let go. Whats worse is now even people he know / met lots of them he scare of them. I started to see him showing this kind of behavior last last week only. After i brought him to meet my mom. The first time he met my mom he was few months old only. I didnt left him alone with my mom bur instead we try to let him slowly recognized that is his grandma. #advicepls #pleasehelp