First the very good news, I've been exclusively breastfeeding Ace for almost three weeks now, except for those two instances when my nipples became so sore and thus I had to resort to formula to give my nipples a rest and let me sleep through the night. The ideal is to breastfeed him all the time, but I'll be honest and say that even if he latched on correctly, my nipples still became sore and the first few seconds of breastfeeding felt like I was being stabbed by shards of glass. And I'm not being dramatic ha, it was that painful.