Hi Lethamukund, I am sorry don't know your name, please may I give a big hug to you and your family please, I don't really know what else to say. It's so normal for a mother to fall asleep while feeding, it's tiring, exhausting with all the sudden change and physical changes after a delivery. Having a newborn in the house is literally a world changed in a day.
Can't count how many days I've fell asleep while feeding although I know I shouldn't.
I totally understand both your brother and SIL. If a couple can stand through loss of a child, let me tell you their bond will be stronger than ever. Bless them both
Lots of love to you and your family for the support you've given to your brother , it's emotionally a difficult task. Bless you sweetie ❤️