I did both breast and bottle, until DS started vomitting up all the formula at 3w (he was intolerant of cow milk, which we didn't know at the time), so went full-time breast and part-time expressing.

I found that DS slowly weaning helped when we did stop feeding - so if you can do split feeding and cut down the amount of breastmilk over a month or something (start with only breastfeeding when YOU need to and try and space it out) that may help. Also, if you find breastfeeding easier this time and change your mind, you can do that. (I'm not going to push you down that line as I'm sure loads of other people around you will, but it's nice to keep options open if only for a couple of weeks.) One thing that did stop the leaking and helped me was a breast pad make called Lilypadz - they are stick-on pads and create light pressure on the breast so they don't leak. They're not painful and can create a lower supply, especially in the early days.