So I decided to breastfeed. My son is almost 3 weeks however, for the past 3 days all he seems to want to do is eat. If I put him down he cries and gets fussy. It lasts from about 5pm to 12/1am .... he won't sleep either during that period. It's quite frustrating I feel lost. Any advice iris this normal? How long does it last? Feel like I'm don't have milk when he feeds that long !