Here is what I do, which barely helps (I focus on managing anterior pelvic tilt):

• Toe-touch stretch to stretch lower back • Kneeling hip flexor stretch • Glute bridges (I don't do these enough) • Crunches (the "right" kind where you don't go all the way up) • Rows and deadlifts to keep shoulders back • Wallsits at work with hips tucked in • Planches at work to help straighten out core

I still get pain once every few months.