Thinking about taking nap away from my daughter she fights her naps all day till 5-6 at night then…

Thinking about taking nap away from my daughter she fights her naps all day till 5-6 at night then all night she’s been crying asking for water then cartoons then she’ll cry to change the YouTube video. I can’t deal with this much longer is it selfish if I just ignore her. It’s been a week and I can’t do it another night once she’s done and out it’s 3 am then her brother is up to eat. Then he gets up at 8 am everyday l. I feel like I’m going to go crazy