Good evening moms. A question, my daughter is 2.5 months old. Lately I…

Good evening moms. A question, my daughter is 2.5 months old. Lately I've noticed that she's not waking up at night. For example, she falls asleep around 10:30 PM and wakes up only in the morning. At 8-9 AM. Diaper sometimes completely dry. And during the day she sleeps normally. That is, mostly sleeping than being awake. Is this normal? My friend said today that it could be because she's weak from this much sleep. Like there's no strength. We're going to see a doctor on Tuesday.