Your body will adjust your milk to your baby.
Don't feel stupid, I didn't successfully bf my first, and had all the same questions you do when I did with my second.
To view links or images in this forum your post count must be 15 or greater. You currently have 0 posts.
The baby will tend to eat more during a growth spurt, therefore boosting your milk supply to match their appetite.
I really recommend the soft plastic nipple guards
if sore nipple are the problem. I didn't know they had them until this baby. He likes to chew, and my nipples were so raw and sore I almost gave up after 2 weeks. Then I went to babiesrus, and found the "nipple protectors". You just put them over your nipple, and latch the baby on. It keeps them from getting chapped/cracked.