FTM here , 4 weeks PP. I never really felt my letdown but always noticed milk gather around my baby’s mouth when feeding so I knew the letdown happened. Out of nowhere tonight I felt like my letdown did not happen! I tried hand expressing and milk did come out it just wasn’t a bunch like normally when she initially sucks. She seemed to keep nursing and wasn’t fussy. Also, the other breast would always leak like crazy when nursing and that didn’t happen either. She slept for a longer stretch tonight so I don’t know if that has something to do with it?