P.M.
Have you looked into tandem nursing? That may be a better fit for your son, yourself and newborn... especially seeing he seems really attached to the 3-4 times he nurses in a day. Four times really isn't that much of an inconvenience, is it?
many sites have tandem nursing info:
www.kellymom.com - http://www.kellymom.com/bf/tandem/index.html
www.llli.org - http://www.llli.org/nb/nbtandem.html
- http://www.llli.org/faq/tandem.html
- http://www.llli.org/nb/nbmayjun03p86.html
I've always wanted to have the opportunity to tandem nurse, but my daughter self weaned at 4.5 and will will be a month shy of 6 y/o by the time #2 comes in July.