Doing things to early?

My daughter is 6 weeks on tuesday and since she was born she has been able to hold up her head for a good amount of time... Every nurse that came in after i had her were really impressed at her being able to do that.

She had her first pedi appointment 3 days ago and when she put her on her tummy haley lifted up her head and even tried to scoot across the table. She had the pedi literally bouncing up in down laughing and pointing at how much she is doing at a month old.

She's very alert, her sleeping schedual is 10/11pm-8am or 12am-10am. Sometimes it's feed at 10/11pm, then again at 4am, then at 10am. She napping is very seldom during the day(i have a 3 year old). Compared to others i feel very lucky she sleeps like that.

Anyone else?