hi, my baby is 11 weeks old and recently started to develop this rash… I’m wondering could it be the formula, like a milk allergy? He doesn’t overly show any other symptoms that I could pin point other than being congested. He’s been very congested since birth. We’ve been using aveeno soothing relief on him (this worked for baby acne) but it’s not helping now. I know I could call the drs but my experience Is that it’s best to have an Idea of what’s wrong first. Thank you in advance x