I have an oversupply problem. I had the same with my first child two years ago.
I've already started the basic strategy of block feeding. I will nurse from one side exclusively for 6 hrs at a time. I'm not seeing any improvements yet. I'm just 10 days PP and I know it can take a while until breast milk regulation gets controlled by supply and demand as opposed to hormones. With my first daughter it took 4 or 5 weeks until I got my supply under control but I didn't start block feeding this early last time.
For those with a similar problem, what strategies worked for you? How long until you got your supply controlled?