Hey Ali,
From my experience it takes a good 6-8 weeks for the supply to regulate and even then it can change when bubs wants to feed more or less.
DD is only a newborn.. I just have no idea about these things. There's a good post on oversupply I found on this thread https://www.bellybelly.com.au/forums...ce-please.html.
Thank you to the special ladies out there sharing their experiences

Store it away in the freezer like gold!
That's what I thought initially and was getting carried away and kinda proud of myself like all the milk was some kind of achievement. weird i know.

Bubs will regulate it to what it wants and needs
..but aren't I interfering with the natural regulation by stimulating more milk production through expressing. I could probably express twice in a 15 hour period though definitely less is expressed in the second go.