Can I drop a pump?

Baby is 3 weeks. I’ve been pumping every 3 hours (8ppd) and make around 50 ounces a day (baby only takes around 24 ounces). I’ve been told I need to pump every 3 hours until my milk supply regulates but I’m already tired of this and want to cut out one of my night pumps. Can I do this or will I mess too much with my supply? If so, how should I go about doing this?