My baby will be 2 months tomorrow and very rarely gives us a social smile. She will hold my eye contact and imitate sticking out tongue and make funny faces if I make silly sounds but is stone faced when it comes to smiling. I try SO hard! I am really worried. She is in general a gassy/fussy baby. We recently had her tongue and lip tie released and were hoping that would help with the fussiness but no. Anyone else's baby late on the social smile train??