something so magic about you (слэш)

"Initially, the fact that Lan Wangji couldn’t keep his robes dry was incredibly embarrassing, but as the day passes he finds that he can’t feel anything but resigned irritation. He’s changed his robes several times, even stuffed a towel inside of them, and still he can’t seem to staunch the flow.
The slightest whimper from the baby has a fresh stream wetting his robes, even if there’s no way A-Yuan can eat anymore. It’s almost like his body is overcompensating for the time that Lan Wangji spent hungry during his pregnancy, desperate to provide for their son."
Lan Wangji is producing too much milk. Wei Wuxian has an idea of how to help.