Three month sleeping pattern?

My daughter has had a routine since she was tiny. She has 4-6 bottles of 6oz a day.

Well she always slept well at night but recently she has her bottle around 5-7pm.. and she doesn’t wake up till 5-6am for her next bottle.

She’s going 10 hours even more sleeping during the nights?

I am fine with this as she’s gained lots of weight and she only naps in the day.

But is this really ok to let her sleep this long?