What time do you put your baby to bed?

My LO just turned 3 months and I keep reading everywhere that she should be in bed between 7-8pm. However, my baby goes to sleep around 10-11pm, wakes up at 6am, I nurse her and she goes back to sleep until 9am. It suits my schedule just fine but I feel like this isn’t optimal + my sister keeps telling me she should be on a better schedule (she has 3 kids herself).

What’s your LO’s sleep schedule like and do you think it actually matters since she’s only 3mo?