E.M.
My two daughters are 2 days shy of being 2 years apart. We talked extensively with my older daughter preparing her to be a big sister. We praised her for being a big sister and talked about things that she could do to help her little sister (going to get diapers, teaching her things, etc). Once my youngest daughter arrived my oldest was excited and happy. They have been inseperable ever since. I continue to praise her for being a good big sister and it has worked beautifully. As for the bottle, i would wean her immediately. i weaned at one year but i know some people wait longer. a great transition cup is the nuby (it has a soft spout). hope this helps and congrats on the new arrival!