My little girl is a year, thought about another but was just wondering. For those with 2 kids or more already. My girl is perfect. She is so smart, nice, loving, goes to bed at 9 and sleep all night and wakes around 9am. She then takes a 2-3 hr nap around noon-1 and is great. She is literally perfect. So my question, is it true the 2nd kid will be the exact opposite and be not so nice and more difficult?