I understand, because I've dealt with something very similar. I have a large family, and they do know God, but all I desire is that they will each form a deep relationship with Jesus, and my younger brother even told me that I was just pushing him away from God. That broke my heart, and honestly all I can say to do is lead by example, pray even when they don't ask, and show them through yourself how much happier you are when you have a life when jesus. Show them what they're missing by enjoying your life with Christ, and continue to pray for them. At some point they will see how much they are missing out on and might want to ask you about it

They already know the Gospel since we were raised as Catholics. I'm not pointing fingers, I also struggle with sin but I really pray my family realizes how much He loves them..