Late smiles

So Henry had his 2 month dr appointment yesterday. He weighed in at 11 lbs 3 oz and is in the 30th percentile. His height was in the 30th too (at least he’s proportional!). As we suspected, he’s behind in his eye contact and (lack of) smiles. We’re hoping that he’s just a little behind because he was a little early, but they recommended us see a pediatric optometrist just in case there are some vision issues. Of course now I’m all stressed out about him being ‘behind’.
Anyone else have babies that were slow to smile and focus? Baby Hank is 9 weeks old.

Total chubster. I thought for sure he’d be at least in the 50th percentile for weight!