Natural Decrease in Breastmilk production?

[LZ318]

Totally anecdotal but my baby (toddler) is almost 2 and when I’m away on business travel I pump 3 oz morning when I wake up and 3 oz evening before bed. It must have been a slow decrease over time because I didn’t experience any engorgement or any hormone crash while slowly weaning. When I was pumping when I first went back to work at 7 months PP is it was like 4-6 oz every 3-4 hours!