Where did my tiny preemie go?

Lily now weighs 10.5 lbs and is 22 1/4 inches long!! Holy crap! My baby is getting so big!! Some of her 0-3 month onsies are too tight. She is so alert now too. She wants to look at everything. I am having a hard time feeding her since she wants to pay more attention to everything going on around her than to her bottle. I have tried feeding her in a quiet room with no distractions, but she is just as content watching the shadows on the wall as she is watching to dogs or the TV so that doesn't work either. She is still getting 100% pumped breast milk. I have decided to EP from here on out. We have tried and tried to get the nursing thing down, but its just not working. She latches on fine at first but after a few minutes she gets frustrated and starts screaming. Even if er do have a good session where she seems to eat for 20 minutes or more, she starts screaming for a bottle within an hour, so I am guessing she is not sucking efficiently to get enough to eat so then I have to pump and give her a bottle and the whole process takes 2 hours, then its time to start over. So for the sanity of us both I am going to stick with EPing. My first goal was 3 months, which is coming up quickly. My next goal is 6 months. I think I can do it. Its a pain to be strapped to a pump all the time, but since she is gaining weight so well and seems happy it makes it all worth it. Just looking at her little face melts my heart!