God can will it. My own husband was born at home(1935) in January on a south Georgia farm. He was a 6 month baby and his grandparents took turns sitting by the fire (there was no central heat, just the fireplace) holding him on a pillow and kept him warm. He was fed with an eydropper. What a survivor he was! He lived to be 75 and he was smart and strong and a hard worker.
So it can happen, even against odds. I am glad for you that you survived too. The world needs good people.
We will all keep praying for him. Thank you for yours too.
My MIl was born in 1913. Almost identical story as yours.