I did until around 6 months, maybe a little longer. I probably would have dropped it if my supply was more robust, but I was skating right on the edge with it. Maybe it was the hormones, but waking up for 20 minutes to pump, and then going back to sleep wasn't a big deal for me. I had a little mini-fridge set up next to where I pumped, and put all the parts directly in the fridge, so I wouldn't have to worry about cleaning and storage until the morning. My plan was to stop whenever it became a hassle, and to supplement with formula, but this ended up working for me.