My DD2 (A) is already 4 months and one week old. I realized yesterday that I haven't been consciously doing much to help her develop skills. With DD1 I would make a point of playing hand games, singing nursery rhymes, trying tummy time (though she despised it and I gave up), and reading books. I wasn't rigorous or crazy but I was home with a little babe and I was trying to think of what I could do for her rather than for me.
Fast forward 4 years and I'm still entertaining DD1. We go to museums, do science experiments, draw and color together, garden, sing, dance and play. And, I bring DD2 along on these adventures. But, I have been doing very little just for her. We have been taking a Music Together Baby class-- but even that I was doing just because she's our instructor for the family class and she invited me to attend free of charge . I've tried tummy time only twice and any reading I've done to her has been when DD1 requests a picture book and DD2 is in my lap. (which is rare because we tend to read chapter books these days and she would rather I read her the next chapter in whatever we're reading...)
So, I'm going to do better... and I'm feeling a little guilty for not doing more already. What are you all doing? Or, are you more laid back about this stuff? Anyone else giving the younger kid short shrift?