8 month old baby expected bedtime

Hello!

My baby is 8 months old and currently wakes up at about 8:30 ish, has two naps in the day and goes to sleep at around 11pm

My partner is adamant that she should be on a sleep schedule and should be sleeping sooner but I think as she’s still little she can just sleep whenever she’s tired and it doesn’t matter as she’s good at sleeping through the night

Am I doing something wrong by not having her asleep earlier? It seems like everyone’s babies are going to bed at 8pm and I obviously wish she would go to sleep at 8 it would be nice to have that time to myself but she’s insufferable if I try wake her up from her naps and they can sometimes last 2-3 hours

I don’t know if this is normal or if I’m making a rod for my own back by her not sleeping earlier or encouraging a schedule