it will be so weird to have a baby again

my son is only 17 months and I'll be due with #2 right around his second bday. it already feels like so long ago that I had a baby. we've come so far now, it's so strange to think we'll be starting fresh again. my son was a really easy baby so I'm not worried about the next one being difficult but it will still be strange having two. i feel like i already forget how to take care of a baby. I guess I'll wrap my mind around it better when I'm more pregnant. I don't know, is it normal to feel this way? don't get me wrong, I'm excited and already in love with the new baby but I'm still like "I can't believe were having another one" even though it was planned. weird?