I was wondering does anyone know what the latest thoughts are on how long a baby should feed at one boob before moving to the next one? I read it can take 25 mins to reach the hindmilk but what if your baby doesn't feed for more than 20 mins at a time? I am aiming for a 3 hour gap between feeds although baby is 3 1/2 weeks now and it varies between 2 - 3 hours and I would never not feed her if she was obviously hungry.
Is the fore / hindmilk theory still valid? I bf DD1 for 16 months (she is now 3) but the usual sorts of anxieties are coming back to me the second time around! If a baby gets too much foremilk then I believe it can lead to excess wind / colic and I don't really want that to happen. 
Also how long is long enough for a feed? 20 mins? or should I be encouraging baby to stay awake and feed for longer? I always did find it tricky to not really know how much milk was being consumed at a feed (but could never get DD1 to take a bottle)
Thanks for reading!