I was hopeless at expressing. Even if I had wanted to I don't think I could have expressed enough to alter my supply (unless I got an electric pump and stayed attached all day).
We never had a routine as such - I just let Yasin feed when he wanted and we sort of fell into a routine and then he would have a growth spurt and feed like crazy for a few days and then we would settle into a new routine. I can't imagine trying to stick to a routine designed by someone else - every family has its own lifestyle which demands differant routines. I just let Yasin design our routine and it worked ok for us.