D.N.
Set up regular mealtimes for breakfast, lunch and dinner. You can breastfeed/give formula before or after the meals but I'd wait an hour or so because when they are full of milk they don't want solids. I always breastfed my son about an hour before a scheduled meal. When offering solids they will tell you when they are done.
My pediatrician gave me a great chart for how much babies should be eating at certain ages. Here is what it says for 6-8 months:
If you're still breastfeeding: on demand
Formula: 6-8 ounces, 3-5 times a day
Grains: Baby cereal (iron fortified) 2-4 Tablespoons, 2 times/day
Bread/Crackers: 1/2 slice or 2 crackers, just offer for a snack or with meals
Fruit (pureed): 2-3 Tablespoons, 2 times a day
Veggies (pureed): 2-3 Tablespoonss, 2 times a day
This is just a guide, some babies will eat more/less, but this helped me. Also be careful with the juice, my pediatrician actually recommended never giving juice. But if you do water it down because juice is full of sugar and she doesn't need all that sugar. You should also be giving her just plain water, not sugar water. I really don't understand why those nurses would tell you to give her sugar water...hmmm.
As for her BM's as long as they are not little pellets (constipation) then she is probably getting enough fluids. If you're still concerned keep offering her water or watered down juice. It's really best to get her used to drinking just water. I hope that this helps. If you would like the rest of the chart above (it covers 0-24 months) I'd be happy to email it to you. Just send me your email address.