My DD was born same date as yours was breastfeed for 15 months. I had my second 4 months ago. For me the milk coming in was painful / uncomfortable, but not as bad as first time and it all happened alot quicker. Milk was in by 48 hours. I did have nipple pain and it did take a couple of weeks for them to toughen up. But again not nearly as bad as with the first. Also, I had completley forgotton how hard it is to feed a newborn as opposed to a toddler who just jumps on and off

Goodluck with the birth and feeding.