Cabbage leaves and decongestant tablets (sudofed). Also heat, I laid under my electric blanket xx
For me decreasing by pumping helped! So I started pumping twice a day, then once and so on
My midwife said to touch them the least amount possible as minor things can keep it increasing
I sort of went through this as my LO just couldn’t latch properly and it was too painful for me. I basically had to wean it off. Pumping didn’t relieve the pressure enough so I ended up putting her on just long enough to relieve me then taking her off until the next time the pressure built up and eventually it reduced and I don’t get it anymore.