Dropping a Pump

Katlin

I produce an oversupply of milk. Usually close to 60 oz a day. My LO is 8 weeks old. I was pumping every 2-3 hours but have recently stretched it to 4. How long will it take to see if stretching it to 4 will affect my supply? I have a freezer stash of over 300 oz currently so I’m not to worried if it dips down some.