Routine from as early as possible even if baby isnt following it. I did Gina Ford twice DS1 was great from start, DS2 I started from 6 weeks. Personally, the longer you leave it the harder it is and I read contuinal stories of problems all caused because parents didnt think it was "Kind" and let baby "make their own decisions". Not us!
Oh how you have made me chuckle.
I enjoy life which DD fits into rather than the other way.She is fab BTW. 