EBF supply decrease

My little just started sleeping through the night typically 10-11 hours. Since then I figured out my supply is decreasing. When she started sleeping through night I pumped before bed and stored because it was uncomfortable and Kept that habit. Now I am not sure how to fix it other than wake myself up at 4 am for a pump. Did anyone else deal with this? Would a power pump before bed help or would my breasts engorge at night? No experience with power pumping. I am doing 3 meals a day and she is obviously hungry in day because she feeds every 1 1/2 to 2 hrs so supply is down in general