Pumping question

Julia

When I pump I don’t like ever stop producing milk... its just really slow. Is that normal. Like 20 min ill get 4oz total .. but if i watch there is still milk coming out just super slow.

On the rare occasion i pump closer to 30 min the pace picks itself back up around 30... i don’t really know why or if thats normal. Because i thought to increase supply you have to keep pumping past when the milk stops flowing...