Maybe try decreasing the amount of water you drink in the evening before bed. You don't want to get dehydrated and hurt your supply, certainly, but drinking lots of water can contribute to producing too much milk.
Also, just to reassure you, if your baby is a newborn, this is just a short phase for most women. I would guess that you'll feel much better by 6 weeks and will rarely or never get engorged by 3 months.