K.K.
Actually...it is very normal and healthy for the baby to want the breast at night, even constant. 6 months is a time when they go through a growth spurt...they are CONSTANTLY hungry!! So it may actually be that baby is hungry! It is also a good idea to maybe get a cosleeper so that Mom is closer to baby at night verses the crib (If you don't want baby in the bed with you) It will make breastfeeding easier. Her nipples wouldn't hurt from constant feeding...it would be from a poor latch. I would suggest talking to a lactation consultant to make sure they have a correct latch. Giving the bottles may actually be causing a "lazy" latch...make sure baby opens all the way when taking the nipple...and not just taking the tip...that will make them sore! Good luck and don't give up! They do get past the growth spurts!! until then, you can do it!!! :)