Evil - the only way to get milk back is to 'ask' your body to make it \ You can do this by putting your baby to your breast as often as you can, and as often as your baby is happy for this to happen. The other way (which can be as well as, not instead of, direct bf) is to express - but as Elphaba says not for an hour. Just for short bursts , switching from breast to breast, and frequently.
Hope this helps. Any of the bf helplines would help with this, and you can research relactation on the web or on mumsnet.
Long story short, I gave up breastfeeding and expressed my milk. Then LO had very bad wind and colic, I didn't bother to to pump and my milk supply has dwindled. I used to get 4oz and now I can only get 1oz after an hour pumping.