hi Mousy,
First of all, congratulations! My boy is 7 months old now, and even now, my breastmilk is like tranquilizer to him - eat already then sleep.
At 2 weeks, your baby's tummy is like the size of a walnut, so you can imagine what the capacity is like. So she will feed very often, especially since breastmilk is highly digestible. My son had the problem of just suckling and using me as a pacifier, so listen out for the sounds of swallowing when your daughter suckles. Also, if you think she's just falling asleep, you can do a few things to stimulate her to suckle: 1) massage her lower jaw (in circular motion) 2) like those ah ma, slightly tap her cheek 3) gently blow on her cheek (cold air stimulates them) 4) gently stroke the sole of their feet, slight tickle
For me, if all else failed, I usually just stripped my son down to his nappy, and strip my top as well - skin to skin contact works wonders, and also good for bonding
I think at 2 weeks old, she is still finding her breastfeeding pattern, and it is best to feed by demand, so whenever she needs feeding, give it to her. Babies know when to stop, but on average try to feed around 15-20min, so you know she is getting hind milk as well as fore milk.
Don't worry, I'm sure other breastfeeding mums also had initial breastfeeding problems, but don't give up, persevere on, and once your milk supply is fully established, you will find breastfeeding a breeze
Good luck!