Dropping Pumps Per Day

Mandy • 29 years old - Married October 2013 - Mom of Baby Girl Dec 2015 😊 Expecting Baby Boy April 2018 ☺️
I'm currently pumping 5-6 times per day and I'm producing 33oz on average at 7 weeks post partum. 
I'm really wanting to drop a pump so 4-5 times per day. Those of you pumping 4x day, when did you transition to 4 ppd and did you see any drop in supply?