Hi,

Congratulations on the birth of little Daisy. I can see, from your son's breastfeeding history, how you would be so worried that it would all be unfolding again - but I think there is much that is different this time. At two weeks everything is just really new for both of you. It's a time of experimenting to see what works best for both of you - and you have certainly got a wealth of suggestions her. Try feeding her on the same breast for a block of 3-4 hours - see if that helps. If not, go back to giving her the first breast and then offering the second.
Looking deeper, I wonder, do you have a family history of food allergies or intolerances? This could be irrelevant right now - what you are going through is pretty comon in the newborn period, but could be worth looking at further down the track if problems persist.