Am I a Biochemical Mother? I'll Lie Flat for Now

In my previous life, I was a poor orphan. After working hard, I managed to live like most ordinary people and became a strategy game streamer. But at twenty, I got a terminal illness and had only a month left to live. A month later, I was reborn in another world? My dad was a four-star general, my mom a great scientist, and I had an adorable little sister. I thought I'd finally made it and could enjoy a life as an overpowered protagonist, but another terrible disaster took away my lifeline. I'm tired. I'll just lie flat... But I can't do that yet. I've still got a little sister who won't stop causing trouble.

(Gender transformation) (Guess whether there's yuri)