Large supply

Mamma's with oversupply/large supply - my little man is 3.5 weeks and I have been exclusively pumping for him since I was in the hospital. (Tongue ties suck!) I have been pumping between 7-16 ounces at a time, trying to pump at least 30 minutes 4-5 times a day. I can't keep up with the pumping every 2-3 hours, but I have a freezer stash already that is probably close to 1000 ounces. My question is, having an amazing supply like this, is there an end in sight? Can I look forward to stopping pumping by 6 months? Is there a magic number of stash I should aim for? Like what are my goals? Help!