No. In fact, there are instances when it's beneficial. If your baby isn't gaining weight, your pediatrician will likely advise waking her to feed at regular intervals to ensure she gets the nutrients she needs.
It's also a good strategy to wake a sleeping infant before you go to bed for a "dream feed," in which she's awake enough to latch on or suck a bottle (and then dozes as she eats). That way, she may snooze for a longer stretch during the night. And by 6 months, you can wake your baby from a long nap to keep her on schedule so that she goes down more easily at bedtime.