Oh, those were the days! I remember when that was my complaint--I was so worried about her weight gain. Quickly, thereafter, I was bemoaning the fact that she wouldn't go to sleep!!!
If you're referring to nightfeeds, I wouldn't wake her. In my experience, my LO never fed well anyway. Eventually, she will wake when she's hungry--really! Her doctor said that unless she slept unusually long for her (whatever her norm was), we could let her sleep at night.