Weaning from the pump

So I started weaning from pumping.. I was pumping 6 times a day and barely getting an ounce each time. I dropped 1-2 sessions each day and now am at 1 session a day. For the past 3 days I’ve only pumped once and am still getting 5 oz each time! Is this normal? Will the supply go down each time or do some people keep the same amount with only one session? If I could get away with the same amount pumping one time instead of 6 then seems like I shouldn’t quit. Anyone have any similarities or advice?