I'm subscribing... I posted pretty much the same thing about my DD last week. She is only 9 weeks, but like your DD she has never slept during the day and we're lucky if we get a couple of 10 minute catnaps. Several people suggested silent reflux to me and my DD is now on Zantac. The reflux appears to be less but still no day sleeps! I'm guessing you would have picked up reflux in your DD by now.

Exhausting isn't it? I have tried everything to settle my DD during the day and the only place she will nap is on my chest, but I also have other children to care for. Anyway, I'm sorry I don't have any answers for you, but at least you know you're not alone! Hopefully others will come in with some advice...