Will being premature affect baby’s milestones?

Lauren • Had my sweet girl 02/22/20 - 5 weeks early due to rare genetic disorder💗 Had my handsome man 09/30/22 - 3 weeks early due to low birth weight💙

My daughter was 6 weeks early but she’s going on 2 months and I can’t get her to smile at all.

Will her being premature affect how soon she does things?