giving my daughter juice.

Crae
Hi! 
My daughter is 8 months and is breastfed and has solids 2-3 times a day. Her poops are irregular and sometimes it seems they are dry but soft.  So I'm wondering if I should be giving had more to drink other than breastmilk? How much water or juice do you all give your baby? And if you give juice so you put it in with milk or water? 
Thanks!