Hello everyone! Maybe someone can give advice, our little one is turni…

Hello everyone! Maybe someone can give advice, our little one is turning six months old next week, we just have huge problems with daytime sleep. We manage to keep her awake for 2-2.5 hours, but we only sleep for 20-30-40 minutes at most, sometimes I leave grandma to rock her, she can hold her for 1.5 hours, but it drives you crazy every time to rock her. And then there are occasional tantrums before bedtime, eyes closed, she doesn't sleep yet cries and turns around. Has anyone had this problem?