DS1, who was EC'd starting at 6 months, was dry at night around 8 months. Until then he was up around 3 times a night to pee while nursing, and another 3 times to just nurse.
DS2, who has been EC'd since birth and is now 10 months old, is no where near that. It could be that i am on autopilot and can't seem to manage to actually wake up at night. I pee and/or change him usually at his 11:30ish wake up, but then not again til morning. Occassionally he is dry at 6am. He is just now starting to not want to pee at 11:30 though. maybe that is a sign he will be peeing less at night.
good luck with the sleep!