Momo the hedgie

Hello, my hedgehog had 6 hoglets. One of them has died right after birth, the mother bit him. Afterwards for a day and a half five of them seemed to be fine but unfortunately this morning three of them passed away. I am 100% that one of them has died of bloating because his belly was getting bigger and bigger and none of it came out. The other two did not bloat, they were just not moving anymore. What could have caused their death?

Is there anything i can do to prevent the other two from dying?



PS: The hoglets were beeing fed by hand because their mother rejected them.