Drop a pumping session

Me

I currently pump twice at work - 9am and 2:45pm. Both times for about 10-11min. I don’t pump to empty. Our daughter is 6mo and we have thousands of ounces in the freezer, so I’d like to drop my morning pumping session.

Do I just slowly pump for less time? Like cut back a minute every week? This morning I only pumped 7.5 min and got 5oz, so I know I can’t just stop altogether or I’ll be in rough shape by the afternoon.