I have no experience, but is it for you? Are you still bottle feeding too? I've been told, repeatedly! If you exclusively feed, your supply will increase to be enough for baby. Feeding is more effective than expressing, too. It might be a nightmare for 3 or 4 days till your body catches up, but might be worth it.
How did it go with his tongue tie appt the other week? How is the feeding going generally now?? xx