Quoting lifeslovely:" Hi ladies, well my LO is a 1month nd 2weeks old . She was born weighing 4pounds, I breastfeed nd her ... [snip!] ... I know she's getting enough and how can I increase my milk supply to take away formula completely? *first time being a mom "
You wont know if she is getting enough until she gains weight in about 22 weeks. Some women's breasts will adjust to the increased demand and some wont.
Give it your best shot and be ready to accept whatever the outcome is.
Her health is most important and should be celebrated. If you cannot BF her 100%, dont beat yourself up about it as that is the way it is sometimes.