Shoot, I put Aug baby, not Sept, but the ITA for Filing Status includes:
"Did Baby live with you more than half the time he/she was alive?"
and:
"Did Baby provide more than half of his or her own support for 2021?"
"Was Baby single as of the last day of 2021?"
"Did you and Baby's other parent live apart at all times during the last six months of 2021?"
Just go through the steps.
