C.J.
at 11 weeks with #2 my advice is to set aside as much time as possible with #1. Come up with a list of something fun the two of you (or the three of you- hubby too) can do together.It is a hard transition for the family. Also, you could start putting together treat bags or activity sacks that are real canvas bags with a theme (cars, babies, coloring, playdoug, etc) pack them up (about five) and don't bring them out until after baby is here. When #1 is feeling antsy, etc. pull out one of the bags and let them have something fun to look forward to.
For the new baby, 11 weeks. Nursery and that is it. Still a long way away for bag packing:)
Good luck and congrats!