Does anyone have experience with post partum depression in their husband? My father in law and I are…

Does anyone have experience with post partum depression in their husband? My father in law and I are pretty sure my husband has it, and has been struggling with it for the past 3-4 months. He’s been on depression meds for close to a month, but we are seeing very very slow improvement and are thinking it’s paternal partum depression. Please, any insight would be so helpful. 😭😭