my son is nearly 7 months old, eating well (started weaning a few wks ago) thing is how do I get juice and water down him? What I mean is what sort of cup is best to use. I have tried a avent 'magic cup' that he has to suck on, but he does not seem too keen on that. I have resorted to using a normal plastic cup and letting him have little sips. Is there anything out there that is better for him so he can eventually do it on his own iykwim..... help me! thank you xx