My little guy will be 3 months on Sunday and although he smiles, it’s very rare. I get maybe a smile or two a day and it’s very brief. He is lifting his head during tummy time but again, it is very brief. My first son at this age was much more interactive, he’d giggle and look around and roll over. My new little boy basically just wants to sleep and eat. Does this sound ok to you or anyone else’s baby similar?