Can anyone help my almost 5 month old gets very upset if someone else holds him or even gets too close. I know they can be attached at certain ages which I love but I am worrying for him. I tried a baby music class (he didn't like the music and cried) and today he had his first Xmas party with other babys which he cried at. I have been advised to go to baby classes but I seemed to have missed the boat on most of them near me until new year. Any tips? Or any baby classes you suggest?