Lexie is 7 months

We are just home from Masada Private Hospital where we spent 6 days! Lexie is now 7 months old and did so much this week, she cut her first tooth, started saying 'dadadadada', slept through the night twice, can now sit on her own, roll from front to back and back to front, she can worm crawl backwards and rotate crawl and finally she can get up on all wobbly fours. When I put her down for her nap now invariably when I go in to check her she has flipped onto her tummy and is asleep or is sideways across the cot or completely the opposite way of how I put her down, it is so funny! She laughs readily and is a happy baby, so placid and pleasant. Before I know it - she will be off and crawling around the whole house and getting ready to walk. She's only 7 months, how can she be so advanced! She's doing things babies arn't supposed to do til 9months! I can read her a book for a 2 year old and she watches and listens intently. She is amazing. See what you think!