Formula and pellet-like poop

milomia

My baby is 2 wks old and unfort we had to supplement with formula early on. His stools are now like pellets and not runny as it was w more breast milk. A nurse advised me that this is not ideal and to give him 1oz water 2-3x a day to help hydrate him further and loosen his stools. Has anybody else been given this advise? Does this sound right? We are using Babys Only Organic formula.