Sleeping through the night cons

So I'm so excited that my three month old is sleeping through the night, but when we wake up, my breasts are super full and hard and feel bruised. She will go ten hours without nursing! But then throughout the day, my supply is very low.. I think my body is making less because of the long stretch of no "demand". The whole supply and demand thing. Is there anything I can do to help increase my daytime supply besides pumping in the middle of the night?? It'd be nice to sleep through the night, too.