@Annie, I totally agree with you about the deep conversations. When my daughter was little, I'd talk to her all the time regardless if she understood me. It really helps with speech development. I still have a video of me saying "I love you" when she was 4 months old and she responded babbling, but the sounds really sounded like her saying "I love you" back. That is just priceless and a memory I will forever treasure!
Reply to Baby advice! (long post)