Quick help please.

I need to be ultra careful not to generate too much supply. Right now I am pumping 3 hourly both breasts, until I get relief, and until most milk is out (because I don't want milk stasis) but not ever getting to the point where I am pumping dry.

I just pumped at 3 pm and got 80 mls in total (45 and 35) so I'm curious... seems like I am powering along and need to pull back?

I just don't know what to do . When do I switch to pumping only one breast at a time (so 6-8 hours between emptying each breast)?

What to do? DD2 is feeding 3 hourly but currently I have heaps of milk for what she needs.