Let downs

I’m pumping 3-4 times a day. I get 2-3 oz in total (wish I made enough to not supplement but it is what it is I guess) however sometimes I’m not pumping and I get this let down reflex. Should I pump every time I feel this? I get excited because I know my body produced milk, perhaps ? I just don’t know if it’s the right thing to do.. to disappoint myself at 1 oz or to wait it out?

I need advice on how to get more oz and also if I should pump when I feel the pins and needles feeling randomly when not pumping