acnebride
The '10 mins each side' & 'swapping' ideas date from our parents' and grandparents' generations, according to the b/f counsellor at my local hospital, but the danger with this is that the babies only ever get the foremilk, and not the calorie-rich stuff that follows.
My understanding is that breast milk gradually changes in make-up as the feed progresses, and that, although you can't strictly time things, you do need to ensure that the baby is taking long enough on one side before switching to the other. I was told to gently squeeze my nipple to check whether there was any milk readily available, before switching, as otherwise, baby might not have 'emptied' the first one (I agree though with the previous comment that you technically never actually empty it).
However, I do sympathise, as dd2 takes just 15 mins max to feed. At the beginning I kept trying to force her to have more as I was convinced she couldn't be getting to the hindmilk. However, my HV reassured me as dd has consistently put on weight and had the appropriate no. of poohy and wet nappies.
To be sure though, I wait until she's come off the first boob of her own accord, then burp her and offer her the second. Sometimes I'll change her nappy and even give her a bit of a rest before offering the second one. However, I always check to see that the first one is genuinely 'empty' - if not, she gets offered that one again.
Much seems to depend on her mood - whether she can be bothered to continue sucking on the first one. If she bobs on and off, I take it that she's had enough, but I do then try the other one. Quite often she goes for this with gusto - suggesting that she needs more thirst quenching stuff than the thicker stuff.
HTH