Hi S.! My advice would be to feed your daughter for the 10 a.m. feeding off the side you began the day with. So if you are nursing from the right first thing in the morning then pumping the left immediately, you should start from the right the next time. However, since you are pumping the left at the same time you are nursing, you really could start from the left too, so you're not always nursing from the right and pumping the left over and over, and since both sides would be equally full at that time (this is assuming your baby is satisfied with only one side per feeding throughout the day). I always tried to start with the side opposite from the one I had left off with for feedings, but both my girls nursed on both sides each time because I stopped nursing when they were 3.5 months old and not yet on solids. With an older baby, it might be different. You might even find that one side produces a little more than the other, in which case you might begin with the fuller side for the majority of feedings. I hope this helped a little! If you are still confused I'd suggest getting in touch with a lactation consultant, who might have all sorts of ideas you never thought of! Good luck!!