Quoting FTM Michelle :" I am kind of planning ahead here because while i have the money i figured I would get some more baby ... [snip!] ... you use both bottle for formula/breastmilk and sippy cup for juice water and stuff? Sorry FTM have no clue about any of this."
We started our son on sippy cups at 4 1/2 months when we had started him on rice cereal and I only give him some water in it since he refuses to take any expressed breast milk in it. He likes the soft tips and the hard tip sippy cups, so we use both lol. The first kind he tried was soft tip and I believe it was NUK.